1.

A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in

Answer»

24/7 days



Formula: If A can do a piece of work in n days, then A's 1 day's work = 1/n .

(A + B + C)'s 1 day's work = 1/24 + 1/6 + 1/12 = 7/24
.
Formula: If A's 1 day's work = 1/n , then A can FINISH the work in n days.

So, all the THREE TOGETHER will complete the job in 24/7days



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