1.

A alone can complete a piece of work in 6 days and B alone can complete it in 12 days. In how many days can A and B together complete the same piece of work ?

Answer»

4 DAYS



A's one day's work = 1/6
B's day's work = 1/12
(A+B)'s one day's work = 1/6 + 1/12 = 3/12 = 1/4
So, A and B will COMPLETE the work TOGETHER in 4 days



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