# User Forum

Subject :IMO    Class : Class 6

Subject :IMO    Class : Class 8

Class : Class 8
Thanks

## Ans 2:

Class : Class 9
Quantity of mixture = 400 ml. Quantity of pure alcohol in it = 15 % of 400 = 15/100 * 400 = 60 ml Let's consider 'x ml' of pure alcohol was added to the mixture. After adding, Quantity of mixture = (400 + x) ml Quantity of pure alcohol in it = (60 + x) ml Strength = (60 + x)/(400 + x) = 32/100 => 100(60 + x) = 32(400 + x) => 6000 + 100x = 12800 + 32x => 100x - 32x = 12800 - 6000 => 68x = 6800 => x = 6800/68 => x = 100 Hence answer is 100 ml

Subject :IMO    Class : Class 6

Class : Class 1

Subject :IMO    Class : Class 6

## Ans 1:

Class : Class 6

Class : Class 1

Subject :IMO    Class : Class 7

Class : Class 1

Subject :IMO    Class : Class 5

## Ans 1:

Class : Class 8

Subject :IMO    Class : Class 3

## Ans 1:

Class : Class 4
The answer should be 80 cups but why is it 25 cups ?Nishka Rawat from Karnataka, Bengaluru, Sarjapur road signal.

## Ans 2:

Class : Class 6
d

Subject :IMO    Class : Class 4

## Ans 1:

Class : Class 4

Subject :IMO    Class : Class 6

## Ans 1:

Class : Class 7
This is wrong. Because prime numbers means which has only two factors 1 and the number itself. Composite means the number which has more than 2 factors. How can you people can give wrong answers without knowing anything. Because of you we will get less marks.

## Ans 2:

Class : Class 6
this answer have to be correct as composite numbers only have more than two factors as per to the question.

Class : Class 8