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A B C have old ratio 2:3:1. A retires and B C remain in ratio 3:1. What is gaining ratio?

Answer and explanation

Correct answer: 3:1

The direct answer is option A: the gaining ratio is 3:1. Initially, A, B and C share 2:3:1, whose total is 6. Thus B’s old share is 3/6 = 1/2 and C’s old share is 1/6. After A retires, B and C share 3:1, whose total is 4. B’s new share is 3/4 and C’s new share is 1/4. B’s gain is 3/4 − 1/2 = 1/4. C’s gain is 1/4 − 1/6 = 1/12. The ratio of gains is 1/4:1/12 = 3:1. Option A is correct. Option B repeats the old ratio and ignores the calculation. Option C reverses the relative gains. Option D wrongly assumes equal gains. The fact that B and C keep the same relative ratio is a quick clue, but comparing old and new fractions gives the exact proof.

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GoodwillRetirementGaining Ratio

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