If 90% of (a – b) is equal to 60% of (a + b), what percentage of a is b?

If 90% of (a – b) is equal to 60% of (a + b), what percentage of a

1.	If 90% of (a – b) is equal to 60% of (a + b), what percentage of a is b?
A.	40
B.	10
C.	20
D.	30
Answer» D. 30

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If 90% of (a – b) is equal to 60% of (a + b), what percentage of a is b?

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