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ER. A SIRISHA Profile page        View Public Wall My Profile Page

A SIRISHA    10 years ago
A is thrice as efficient as B and hence completes a work in 40 days less than the number of days taken by B.
What will be the number of days taken by both of them when working together ?
Reply Like? Yes (9) | No   
ashutosh shukla   10 years ago
(ET)a =(ET)b i.e 3(t-40)=1*t;
Like? Yes | No   
A SIRISHA    10 years ago
IF M% OF M + N% OF N = 2% OF (M*N) ,THEN WHAT PERCENTAGE OF M IS N ? WITH EXPLANATION


OPTION
A) 50%
B) 75%
C) 100%
D) CANNOT BE DETERMINED DUE TO INSUFFICIENT DATA
Reply Like? Yes (3) | No   
ashutosh shukla   10 years ago
m*m + n*n=2mn; i.e m=n. 50% ans
Like? Yes | No (1)  
Sneha Singh   10 years ago
50% is the correct & verified ans.
Like? Yes | No (2)  
Ramakrishna    10 years ago
Q: In a 200m race A beat B by 10m or 2 seconds. What is A"s time over the race? I NEED COPLETE SOLUTION

a) 38sec b) 40 c) 42 d) none
Reply Like? Yes (19) | No   
abhishek narayan   10 years ago
let the speed and time taken by B be x m/s and t sec respectively.
t*x=190
(t+2)*x=200
t=38 sec
Like? Yes (11) | No (1)  
A SIRISHA    10 years ago
If 1 1 1 1= R
2 2 2 2= T
3 3 3 3= E
4 4 4 4= N
Then
5 5 5 5= ?
????????????????????
Reply Like? Yes (7) | No (3)  
Sravanthi   10 years ago
1+1+1+1=Fou(r)=R
2+2+2+2=Eigh(t)=T
3+3+3+3=Twelv(e)=E
4+4+4+4=Sixtee(n)=N
5+5+5+5=Twent(y)=Y
Like? Yes (14) | No (3)  
Amar Poonia   10 years ago
Y (last charachter of addtion of all digits). e.g. 5+5+5+5=20 Twent Y
Like? Yes (2) | No   
balu   10 years ago
Your super sravanthi....ur right ans
Like? Yes (2) | No   
A SIRISHA to RAKESH    10 years ago
Q. In an election between two candidates , a candidate who gets 40% of total votes is defeated by 15000 votes. The number of votes polled by the winning candidate is ? WITH EXPLANATION
Reply Like? Yes (149) | No (35)  
abhishek narayan   10 years ago
let the no. of votes polled= x.
given, 3x/5-2x/5=15000.
x=75000.
no. of votes polled for winning candidate is = 3x/5 =45000
Like? Yes (51) | No (22)  
Deepak prajapati   10 years ago
let total no of vote=x
according to the question candidate who got 40% vote,defeated by 15000 votes
that means(no of votes of winner-no of votes for losser=15000)
((60*x)/100)-(40*x)/100)=15000
after solving we got x=75000
no of vote polled by winning candidate=((3*75000)/5)=45000
Like? Yes (78) | No (19)  
Akash Verma   10 years ago
let total no. of votes be x.
then (x*40/100)+15000=x*60/100
total no votes =x=75000
So votes polled by winning candidate = 3*x/5=3*75000/5=45000 Ans
Like? Yes (31) | No (14)  
Nishant Chaudhary    10 years ago
We know in the election only two candidate participates .
A candidate who found 40% vote is defeated by 15000 votes
it show that that that the condidate defeated by 20% vote
20% votes =15000
thus the winning candidate polled 15000×3=45000 votes
Ans-45000 votes
Like? Yes (29) | No (14)  
llamar   10 years ago
defeated candidate got 40% votes , winning candidate get 60%
difference b/w them is 20%=15000
so winning candidate get (60%)=3*15000=45000
Like? Yes (62) | No (10)  
Vaishali mittal   10 years ago
winning candidate got
45000
Like? Yes (7) | No (12)  
selvam   9 years ago
let take two candidate as A and B
if A takes 40% then B takes 60%.difference is 20% which is nothing but 15000 votes.
20%=15000
60%=? (here i have taken 60% because it is asked to find the winning cand votes)
?=(15000*60)/20=45000
Like? Yes (38) | No (4)  
Abdul Majid   8 years ago
in an election between two candidates, a candidate who obtained 7650 votes lost by a margin of 10% of total votes . Find the total votes? Please answer this question.
Like? Yes (34) | No (8)  
A SIRISHA to RAKESH    10 years ago
Q. if the price of wheat be raised by 30% , find by how much percent a house holder must reduce his consumption so as not number increase his expenditure ? WITH EXPLANATION
Reply Like? Yes (45) | No (16)  
abhishek narayan   10 years ago
let x and y be the cost of the wheat and household consumption respectively.
expenditure= x*y.
new cost of wheat= 1.3x. Let new household consumption be a.
in order to not let the expenditure increase, x*y=1.3x*a
a=10y/13.
thus, consumption should decrease by = (3/13)*100%=23.07%
Like? Yes (24) | No (19)  
Akash Verma   10 years ago
direct formula= (R/(R+100))*100,
then, (30/130)*100=23.07%
Like? Yes (23) | No (5)  
Gaurav Sharan   10 years ago
Let old price be 100
Then new price = 130
Consumption needs to be decreased by 30 which is in percentage (30/130)*100 = 23.07%
Like? Yes (64) | No (9)  
llamar   10 years ago
assume
initially wheat 1kg=100/-
price increased by 30% means 1kg=130
how much wheat he is getting for 100 is x=(100*1000)/130=769.23 grams
consumption should decrease by 1000-769.23=230.7=23.07% of kg
Like? Yes (14) | No (6)  
balaji singh   6 years ago
(r/r+100)*100
(30/30+100)*100
=23.07
Like? Yes (1) | No (3)  
A SIRISHA to RAKESH    10 years ago
Q. If the radius of a circle is decreased by 50%, its area is reduced by ...? WITH EXPLANATION
Reply Like? Yes | No   
abhishek narayan   10 years ago
Let the radius be R.
new area = pi*(0.5R)^2
= 0.25*pi*(R^2).
% reduced = {(1-0.25)/1}*100 = 75%
Like? Yes (2) | No   
P.ARUNA   10 years ago
for any 2 dimensional geometry figure the change in its area can be found bye (2x+(x)^2/100)
given area decreased ny 50% so (2(-50)+(-50)^2/100)
= -100+25
= -75%
the area reduced by 75%
Like? Yes | No   
A SIRISHA to RAKESH    10 years ago
Q. By mixing water a man gains the profit of ((100/9) %). Find the quantity of water mixed by him.
WITH EXPLANATION
Reply Like? Yes (16) | No   
Gaurav Sharan   10 years ago
Let cp of milk =c and of water is 0.
sp of mixed milk = c
cp of mixed milk = 0.9c
let qty of water and milk be n1 and n2 respectively.
By rule of allegation,
n1/n2=(c-0.9c)/(0.9c-0)
i.e. n1/n2= 1/9
So, ratio of milk to water is 9:1
Like? Yes (1) | No (5)  
yash   10 years ago
Assume the quantity of milk is n1 @ rate of Rs x /unit
and quanity of water is n2
before mixing water the cost price of milk is n1 *x
after mixing water the cost price will be (n1+n2) *x
the profit will be
(n1+n2)*x- n1*x which will be equal to (100/9)%* n1 *x
so n2*X= (1100/9)*1/100*(n1*x)
n2*x=(1/9) n1*x
n2/n1=1/9
so the ratio of water and millk is 1 ratio 9
Like? Yes (6) | No (2)  
A SIRISHA to RAKESH    10 years ago
Q.I mixed some water in pure milk and the mixture is sold at the cost price of the milk. If I gained 16 ⅔% ,in what ratio did I mix water in the milk ? WITH EXPLANATION
Reply Like? Yes (68) | No (17)  
A SIRISHA to RAKESH    10 years ago
Q . In a certain camp , 20% of the boys are from Maharashtra state and30% of those are from Bombay city. If there are 49 boys in the camp who are from Maharashtra state but not from Bombay city, what is the total number of boys in the camp ? WITH EXPLANATION
Reply Like? Yes (10) | No (2)  
abhishek narayan   10 years ago
Let the no. of total boys in the camp be x.
Given, x/5 are from maharashtra.
and 0.3*x/5 are from Bombay city.
Also, x/5-{(0.3x)/5}= 49
7x=49*50
x=350. ans
Like? Yes (14) | No (4)  
Gaurav Sharan   10 years ago
Let total boys be x.
Boys from Maharashta : 0.2x
Boys from Maharashtra but not Bombay : (0.7)0.2x = 49
so, x = 350
Like? Yes (5) | No (2)  
A SIRISHA to RAKESH    10 years ago
Q. A rise of 600m is required to get a rail road over a mountain the grade can be kept down by lengthening the track and curving it around the mountain peak. The additional length of the track required to reduce the grade from 2% to 3% is approx ? WITH EXPLANATION
Reply Like? Yes (28) | No (3)  
sundar   10 years ago
600/3%-600/2%= 10000
Like? Yes (2) | No (6)  
ravi teja ravi teja   9 years ago
why should we take 600/3% ?
Like? Yes (1) | No (4)  
BHUVNESH SINGH   7 years ago
The grade is actually the slope of the railroad line. So the given slopes are 0.03 and 0.02. Calculate the length required for each slope and subtract the answers to get your final answer which is the additional length of track required. Slope is the change is height over change in length.

1) For a slope of 0.03 and height of 600 m (which is same for both cases), the length required is 30000 m
2) For a slope of 0.02 and height of 600 m, the length required is 20000 m

So 30000-20000= 10000 m, which is your final answer. The answer to the question is "a" 10000 m
Like? Yes (11) | No (2)  
A SIRISHA to RAKESH    10 years ago
Q An insurance collector receives 15% commissions on the premium collected .How much must he collect per week in order that his annual income may be rs.6500/- ? WITH EXPLANATION
Reply Like? Yes (2) | No   
Deepak prajapati   10 years ago
suppose,
insurance collector collects x premium per day
so
commission per day will be=(x*15)/100=(3*x)/20
according to question
((3*x*365)/20)=6500
so,x=118.72 per day
for a week =7*118.72=831.04 per week
total income for a week will be 831.04
Like? Yes (3) | No (6)  
Uttam guha   6 years ago
((6500/52)*100)/15=833.33...
Like? Yes (7) | No (1)  
A SIRISHA to RAKESH    10 years ago
Q. a man taxed at a rate of 5 % as income tax and 10% special surcharge on the amount of income tax pays altogether Rs. 1110 . Find his gross income if he allowed a deduction of 20% . WITH EXPLANATION
Reply Like? Yes (252) | No (25)  
chandra   6 years ago
a man taxed at a rate of 5% as income tax and 10% special surcharge on amount of income tax pays altogether 1110. Find his gross income if he is allowed for deduction of 20%.
Like? Yes (17) | No (8)  
A SIRISHA to RAKESH    10 years ago
Q A garden has only red, green and white flowers. 60% of flowers have red colours, 30% have green colour and 50% have white colour. If no flower has all the three colours, What percentage of the flowers have only one colour ? WITH EXPLANATION
Reply Like? Yes (5) | No   
abhishek narayan   10 years ago
let n(X) be the total no. of flowers in the garden = x.
n(X)= n(RUGUW)= n(R)+n(G)+n(W)-n(two color flowers) + n(three color flower)
x= 0.6x+0.3x+0.5x-n(two color flowers)+ 0
n(two color flowers)=0.4x
n(only R)+n(only G)+n(only W)= n(R) + n(G) +n(W) - 2(two color flowers) )+ 3(three color flowers).
= 0.6x + 0.3x + 0.5x -2(0.4x) + 3*0
=1.4x- 0.8x = 0.6x.
Hence, %(only one color flowers)= 60%
Like? Yes (5) | No (5)  
Deepak prajapati   10 years ago
suppose total flowers in the garden=x
given that
n(r)=.6*x
n(g)=.3*x
n(w)=.5*x
n(r g w)=0 (no of flowers has all the three colors)/here space between consecutive no represents intersection
we know that
n(ruguw)=n(r)+n(g)+n(w)-n(r g)-n(g w)-n(r w)+n(r g w)
so,x=(.6+.3+.5)*x-[n(r g)-n(g w)-n(r w)]+0
so,
x[n(r g)-n(g w)-n(r w)]=1.4*x-x=.4*x
now
//formula (only A)=[n(A)-N(A B)-N(B C)+N(A B C)]

[(only r)+(only g)+(only w)]=[n(r)+n(g)+n(w)]-2*x[n(r g)-n(g w)-n(r w)]+3*n(r g w)
=(1.4*x)-2*(.4*x)+(3*0)
so,
[(only r)+(only g)+(only w)] =.6*x
% of [(only r)+(only g)+(only w)]=((.6*x)/x)*100=60% ans.
Like? Yes (5) | No   
A SIRISHA to RAKESH    10 years ago
Q. An alloy contains tin and copper in the ratio 4:5. If tin has 20% impurity and copper has 58%, what is the average percent impurity ? WITH EXPLANATION
Reply Like? Yes (13) | No (1)  
RAKESH   10 years ago
tin = 4/9 , copper = 5/9
impurity in, tin =4/9 *20% = 8/90 , copper = 5/9 *58% = 29/90
total impurity = (8/90 +29/90) = 37/90

% impurity = 37/90 *100 = 41 % approax
Like? Yes (14) | No (5)  
Harsha Vardhan   8 years ago
rakesh how did u take tin as 4/9 and cu 5/9 ?? is it 4+5=9 or any other explanation
Like? Yes (6) | No   
Saloni   6 years ago
Let the quantity of tin and copper in the alloy be 4x and 5x, respectively.
Then impurity of tin
= 0.2 × 4x = 0.8x.
and that of copper
= 0.58 × 5x= 2.9x
Total impurity=0.8x + 2.9x = 3.7x

Average impurity percentage
= 3.7x/9x × 100% = 41.1%
Like? Yes (2) | No (1)  
A SIRISHA    10 years ago
Q. An alloy contains tin and copper in the ratio 4:5. If tin has 20% impurity and copper has 58%, what is the average percent impurity ? WITH EXPLANATION
Reply Like? Yes | No   
abhishek narayan   10 years ago
Let the quantity of alloy be x.
tin impurity = (0.2*4x)/9 and copper impurity=(0.58*5x)/9.
Total % impurity= {(0.8+2.9)/9}*100%=(3.7*100)/9%=41.11%
Like? Yes | No   
A SIRISHA    10 years ago
Q A garden has only red, green and white flowers. 60% of flowers have red colours, 30% have green colour and 50% have white colour. If no flower has all the three colours, What percentage of the flowers have only one colour ? WITH EXPLANATION
Reply Like? Yes (1) | No (1)  
A SIRISHA    10 years ago
Q. a man taxed at a rate of 5 % as income tax and 10% special surcharge on the amount of income tax pays altogether Rs. 1110 . Find his gross income if he allowed a deduction of 20% . WITH EXPLANATION
Reply Like? Yes | No (1)  
A SIRISHA    10 years ago
Q An insurance collector receives 15% commissions on the premium collected .How much must he collect per week in order that his annual income may be rs.6500/- ? WITH EXPLANATION
Reply Like? Yes | No   
A SIRISHA    10 years ago
Q. A rise of 600m is required to get a rail road over a mountain the grade can be kept down by lengthening the track and curving it around the mountain peak. The additional length of the track required to reduce the grade from 2% to 3% is approx ? WITH EXPLANATION
Reply Like? Yes (1) | No   
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