Exams › SSC CGL (Prelims) › General

If 20% of \((A + B)\) = 50% of \((A - B)\), then find the ratio \(A:B\).

1. 3: 7
2. 5: 2
3. 7: 3
4. 4: 3

Correct answer: 7: 3

Solution

The equation is \(0.2(A+B)=0.5(A-B)\). Simplifying gives \(2(A+B)=5(A-B)\), so \(2A+2B=5A-5B\), hence \(7B=3A\). Therefore, \(A:B=7:3\).

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