33 is subtracted from one third of a number, then the obtained number is increased by 250 % .
5/7 of the number obtained is multiplied by 3/2 then its half is increased to 120 % .
when 225 is decreased from the obtained number, zero is obtained, then the number is
[{(?/3)-33}*3.5*(5/7)*(3/2)*(1/2)*1.2]-225=0 => ?=399
Note that number is increased by 250 % means the number will become 100% +250% = 350% of the
original number for this we should multiply the number to 3.5. Similarly number is
increased to 120 % means the number will become 120% of the original number for this
we should multiply the number to 1.2
Rate list of some liquids purchased by Subham is
Item Rate per litre Amount required in litres
Milk 20/- 5
Oil 80/- 1
Cream 120/- 0.5
A shopkeeper offers a discount of 10%, 20% and 30% in the rate of following items.
These discounts are given according to the demand of customer. For getting maximum profit,
Subham will use 30% discount in..... Item and he will pay ...... rupee to the shopkeeper.
In the problem, Subham has to invest 100 rupee in 5 litre milk, 80 rupee in 1 litre oil and
60 rupee in 0.5 litre cream, therefore for getting maximum profit he will use 30% discount in milk
of maximum price then 20% in oil and 10% in cream of minimum price.
Here
1234 = 1*2*3*4/1+2+3+4 = 24/10 = 12/5
after dividing 12 by 5 we get 2 as divisor and 2 as reminder
2/2 = 1
4567 = 4*5*6*7/4+5+6+7 = 840 /22 = 420/11
after dividing 420 by 11 we get 38 as divisor and and 2 as reminder
38/2 = 19
on applying same rule
6789
=6*7*8*9/6+7+8+9 = 3024/30 = 1512/15 = 504/5
after dividing 504 with 5 we get 100 as divisor and 4 as reminder
100/4 = 25
If in a coded language four fundamental operations of arithmetic -
addition, subtraction, multiplication and division are given as follows -
Operation Code
+ it
- a
X li
/ .....
The code in blank place is-
OPtion
1) is
2) i
3) s
4) il
5) ti
6) was
7) am
8) y
9) on
10) in
Solution
Code for "+" is "it", the middle letters of word "addition". Since the word contains 8 letters totally,
therefore 2 letters are middle letters.Similarly code for "-" is "a", the middle letter of word "subtraction".
Since the word contains 11 letters hence only 1 letter is middle letter. Same for others
Division => is
The breadth of a plate increases from one corner to other in a continuous manner.
Breadth of the plate changes from 10 cm. to 20 cm. and length of the plate is 50 cm., then area of the plate is
We can assume that the plate is formed of three geometries
First is a right angled triangle of two perpendicular sides 50 & 5 cm.
Second is a rectangle of dimensions 50 & 10 cm.
Third is a right angled triangle of two perpendicular sides 50 & 5 cm.
Total area of the plate is 1/2(50+5) + 50×10 + 1/2(50+5) = 750
A cylinder of radius and height both equal to 10 cm. made by paper is unfolded to form a plane sheet of paper.
If circumference of a circle is 2ΠR, then area of plane paper sheet is-
Six is a number perfect in itself, and not because God created the world in six days; rather the contrary is true. God created the world in six days because this number is perfect, and it would remain perfect, even if the work of the six days did not exis
Saint Augustine of Hippo
"Pure mathematics is, in its way, the poetry of logical ideas."