By Ajay Kumar

Verified by Ajay Kumar

A, B, C together finish a job in 8 days. A and B together take 12 days, while B and C together take 16 days. In how many days can C alone finish the job?

  1. 18 days

  2. 20 days

  3. 24 days

  4. 30 days

Answer: C

Solution

A + B + C work rate = 1/8 and A + B work rate = 1/12. C's work rate = \(\frac18-\frac1{12}=\frac1{24}\). Therefore, C alone takes 24 days.

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