Question

21. If 50% of (a - b) = 30% of (a + b), then what
percent of a is b?
(1) 20%
(2) 25%
(3) 40%
(4) 38%​

Answer 1

Answer:

20% of A = 0.2A

50% of B = 0.5B

0.2A = 0.5B

Dividing bot sides by 0.5

0.4A = B

i.e B equals 40% of A

means B is lesst han A by 60%

I hope this helps you

Answer 2

Answer:

I think 20% is the answer