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If 15% of (A + B) = 25% of (A − B), then A : B equals:
A4 : 1
B2 : 1
C5 : 2
D3 : 1
Answer & Solution
Correct answer: A. 4 : 1
1. 0.15(A+B) = 0.25(A−B).
2. 3(A+B) = 5(A−B).
3. 3A + 3B = 5A − 5B → 8B = 2A → A/B = 4.
_Source: jkchrome Percentage QB, p.5 — % ratio_
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