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king 2 years ago

the petrol price after two successive price hike of 20% and 30% is Rs 78 per litre what is the price of petrol before these hikes
a: Rs 56
b: Rs 50
c: Rs 42
d: Rs 64

Reply Like? Yes (1) | No

chitranshu shrivastava 2 years ago

consider x as an initial price...........then accordingly...........x*(120/100)*(130/100)=78 on solving for x we will get the answer 50 that means option "b" is correct.

Like? Yes (2) | No

PIYUSH AGRAWAL 2 years ago

50 because by supposing from option and apply this
50+ 20% of 50 =60
60+ 30 %of 60= 78.

Like? Yes | No (2)

king 2 years ago

A,b,c, are three consecutive odd numbers in ascending order such that the value of three times A is 3 less than two times c find the value of c

a: 7
b: 9
c: 11
d: 5

Reply Like? Yes | No (1)

Chinkesh Kumar 2 years ago

let numbers x, x+2 , x+4 be three consecutive odd numbers.
3x=2(x+4)-3
x=5
so, c=5+4=9.

Like? Yes (2) | No (1)

Tridip Das 2 years ago

Nos are a,b=a+2,c=a+4
3a=2c-3=> 3a+3=2a+8=> a=5
So b=7,c=9

Like? Yes | No

DEEPAK KR. 2 years ago

Let 2n-1,2n+1,2n+3 are the consecutive odd numbers
3(2n-1)=2(2n+3)-3
2n=6
so, n=3
so C=2n+3 = 9

Like? Yes (1) | No

king 2 years ago

a trader purchases oranges at Rs 600 per hundred He spends 15% on storage . What should be the selling price per hundred to earn a profit of 20%

a: Rs 812
b: Rs 828
c: Rs 720
d: Rs 764

Reply Like? Yes (5) | No

rajat gupta 2 years ago

828 is the right answer

Like? Yes (2) | No (1)

Devendra Marghade 2 years ago

b: Rs 828

Selling Price to earn 20% profit= (120/100)*(Cost Price+Storage cost)
=(120/100)*[600 + 600*(15/100)]
=828

Like? Yes (4) | No (1)

kadimetla parusaramudu 2 years ago

total cost is 600_+15%of 600=690.
to get a profit of 20% i.e ( 20% of 690)+690=690+138=828

Like? Yes (3) | No (1)

Siva 2 years ago

total cost price=600+90=690, selling price=690+(690*.02)=828

Like? Yes (2) | No

oshin jain 2 years ago

15*600/100=90
so cost price=600+90=690
now profit=120*690/100=828 is the ans

Like? Yes (1) | No (1)

vamshi krishna 2 years ago

828 is the right ans

Like? Yes (1) | No

Pruthvi Soni 8 Months ago

828 will be the right answer

Like? Yes (1) | No

king 2 years ago

The feul indicator in a car shows 1/9 of the tank is full when 25 liters of petrol is added the indicator shows two third of the tank is full what is the capacity of fuel tank

a: 40 litres
b: 36 litres
c: 50 litres
d: 45 litres

Reply Like? Yes | No

rajat gupta 2 years ago

45 is the right answer

Like? Yes | No

Devendra Marghade 2 years ago

d: 45 liters

If capacity of fuel tank=x liters, then (x/9) + 25= 2x/3, x=45

Like? Yes | No

king 2 years ago

N individuals were testedfor two infection . If 1/3 rd of the tested had infection A and those with infection A,1/5 th also had infection B how many individual donot have the infection A and B

a: none of these
b: 4N/5
c: N/5
d: 14N/5

Reply Like? Yes | No

king 2 years ago

A 200 meter train crosses another train travelling oppsite in direction 15 sec the length of the train is 300 meter and speed of both the trains are equal find the speed of the train

a: 50 kmph
b: 36 kmph
c: 64 kmph
d: 60 kmph

Reply Like? Yes (2) | No (2)

rakesh sharma 2 years ago

2V=500/15
V=50/3m/s
v=(50/3)x(18/5)=60

d.60

Like? Yes (4) | No (1)

Siva 2 years ago

Let the speed of the train be S
as the two trains having same speed 2 S=[(200+300)/15]=50/3 m/s=60 Kmph

Like? Yes (2) | No

Siva 2 years ago

60, s=[(200+300)/(2*15)]*(18/5)=60

Like? Yes | No

simran shanti 2 years ago

200/s-300/s=15
100/s=15
s=15/100m/s
15/100*18/5kmph
=60kmph

Like? Yes | No

simran shanti 2 years ago

2s=500/15*18/5
=120/2=60kmph

Like? Yes | No

Sachin saurav 2 years ago

ans=opt(d) ; 500/1000=(2x)*(15/(60*60))=60 Kmph (considering the speed of both the train be x Kmph)

Like? Yes | No

king 2 years ago

sri is as older than vimal as he is younger then karthi . If some of the age of vimal and karthi is 58 years then what is the age of sri

a: 25 years
b: 30 years
c: 45years
d: 29 years

Reply Like? Yes (1) | No

king 2 years ago

an iron ore of 80 tonnes yielded 40 tonnes of metal which had 12 % of impurity what is the % of impurity in ore

a: 10%
b: 6%
c: 20%
d: 16%

Reply Like? Yes | No

Devendra Marghade 2 years ago

b: 6%

100*[40*12/100]/80=6

Like? Yes | No

king 2 years ago

In a class 48% students failed in maths 32% failed in chemistry 20% failed in both subjects if the number of students who passed the both was 840 how many students were there in the class

a: 1800
b: 2100
c: 2000
d: 2200

Reply Like? Yes | No

neha gupta 2 years ago

Let x be the total number of students
Using Venn diagram we can find out that (28+20+12)% = 60% is the percentage of students who are failed in at least one subject so 40% are the students who passed in both subjects
so 40% of x = 840
on solving it we get , x = 2100

Like? Yes | No (1)

rajat gupta 2 years ago

2100 i s the right ans

Like? Yes | No

king 2 years ago

find out the minimum fracion when added to 11/16+12/20 will give a complete number

a: none of these
b: 57/80
c: 15/20
d: 23/20
Read more at http://www.m4maths.com/placement-puzzles.php?UID=377184#4iTDOwPXs2iElaOt.99

Reply Like? Yes | No

neha gupta 2 years ago

minimum fraction to be added is 57/80

Like? Yes | No

Devendra Marghade 2 years ago

b: 57/80

(11/16) + (12/20)=(55+48)/80=103/80
If numerator becomes 160 the fraction will give a complete number, so (160-103)/80=57/80 is a minimum fraction to be added.

Like? Yes | No

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