A and B together can complete a piece of work in 72 days, B and C together can complete it in 120 days, and A and C together in 90 days. In what time can A alone complete the work?
[A] 150 days
[B] 80 days
[C] 100 days
[D] 120 days

Show Answer

This question is part of UPSC Prelims Practice and Mock Tests membership programme.