Question

15% of (a+b) and 25% of (a-b)

Answer 1

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Answer 2

15/100 (a+b) = 25/100 (a-b)

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

3a+3b = 5a - 5b

3b+5b = 5a-3a

8b = 2a

b/a = 2/8

b/a = 1/4

1/4*100 = 25%