A and B together can finish a work in 12 days, B and C in 15 days, and C and A in 20 days. In how many days can A, B and C together finish it?

A. 15

B. 12

C. 10

D. 8

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ibps rrb Save WhatsApp Report

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Answer: C. 10

Answer: (C) 10

2(A + B + C) = \( \frac{1}{12}+\frac{1}{15}+\frac{1}{20} = \frac{12}{60} = \frac15 \). So A + B + C = \( \frac{1}{10} \): 10 days.

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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