A can do a work in 12 days and B in 15 days. They work together for 4 days and then both leave. C finishes the remaining work in 6 days. How many days would C alone take for the whole work?
A. 18 days
B. 10 days
C. 12 days
D. 15 days
1 answer
Best answer
Answer: D. 15 days
Answer: (D) 15 days
Work = 60 units; A = 5, B = 4 units/day. In 4 days they do 36 units; 24 units are left.
C does 24 units in 6 days, i.e. 4 units/day. C alone = 60 ÷ 4 = 15 days.
Doubtly AI
· 27 Oct 2026
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