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A B and C share in 4:3:3. A retires and B C new ratio is 6:4. What will be the gaining ratio?

Answer and explanation

Correct answer: 3:1

Direct answer: Option A, 3:1. The old ratio of A, B and C is 4:3:3, so B’s old share is 3/10 and C’s old share is 3/10. After A retires, the new ratio of B and C is 6:4, or shares 6/10 and 4/10. Gain means new share minus old share. B gains 6/10−3/10=3/10. C gains 4/10−3/10=1/10. Their common denominator is 10, so the gaining ratio is 3:1. Option A is correct. Option B, 6:4, is the new ratio, not the gain ratio. Option C, 1:1, would wrongly assume equal gains, although B gains three times as much as C. Option D, 3:3, also states equal gains and is therefore wrong. A useful check is that total gain is 3/10+1/10=4/10, exactly A’s old share. Memory cue: gaining ratio = new share − old share.

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Retired AGaining RatioNew Ratio

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