Question

If 15 of (a+b)=25 of (a-b) then what percent of b is equal to a

Answer 1

Hi ,

It is given that ,

15 of ( a + b ) = 25 of ( a - b )

15( a + b ) = 25 ( a - b )

Divide both sides with 5 we get,

3( a + b ) = 5( a - b )

3a + 3b = 5a - 5b

3b + 5b = 5a - 3a

8b = 2a

2a = 8b

a = 8b/2

a = 4b

a = [ ( 4 × 100 )/100 ]b

a = 400 % b

Therefore ,

400% b is equal to a

I hope this helps you.

: )

Answer 2

15 of (a+b) = 25 of (a-b)

15 × (a + b) = 25 × (a - b)

3 (a + b) = 5(a - b)

3a + 3b = 5a - 5b


8b = 2a

4b = a

As b is times of a, So,

b is 400% of a



I hope this will help you


(-: