# User Forum

Subject :IMO    Class : Class 6

We have If p = 15 and q = 3, then find the value of 5p * (4q * 3q).

A - 43
B 3
C - 3
D 15

Class : Class 10

## Ans 2:

Class : Class 8
please explain someone why to put a=3q and b=4q

Class : Class 6

Class : Class 8

## Ans 5:

Class : Class 8
What happened to q=3 they didnât do anything with that. They should have multiplied 4q and 3q by 3 before solving the question.

## Ans 6:

Class : Class 6
can not understand

## Ans 7:

Class : Class 8
don't understand the q

Class : Class 6

## Ans 9:

Class : Class 6
SolutionPutting a = 4q and b = 3q in a * b = (3a 2b)/(3a â 2b).(4q * 3q) = [3(4q) 2(3q)]/ [3(4q) - 2(3q)]= (12q 6q) / (12q â 6q)= 18q/6q = 3So, 5p * (4q * 3q) = 5p * 3Put p= 1/5 in 5p * 3we get 5 x 1/5 * 3 = 1 * 3= [3(1) 2(3)]/ =[3(1) - 2(3)]= (3 6)/(3 â 6)= 9/-3 = - 3Answer-(C) - 3

Class : Class 6

## Ans 11:

Class : Class 8
the question is not complete

Class : Class 6

## Ans 13:

Class : Class 4
Putting a = 4q and b = 3q in a * b = (3a 2b)/(3a â 2b). (4q * 3q) = [3(4q) 2(3q)]/ [3(4q) - 2(3q)] = (12q 6q) / (12q â 6q) = 18q/6q = 3 So, 5p * (4q * 3q) = 5p * 3 Put p= 1/5 in 5p * 3 we get 5 x 1/5 * 3 = 1 * 3 = [3(1) 2(3)]/ =[3(1) - 2(3)] = (3 6)/(3 â 6) = 9/-3 = - 3 Answer-(C) - 3

Class : Class 7
it is option c

Class : Class 7
ans is b