Question

A can do a job in 20 days, B in 30 days and C in 60 days. If A is helped on every third day by B and C then in how many days the job is finished
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Answer 1

Answer:

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? work is done in 3 days. Whole work will be done in (3 x 5) = 15 days. plz mark me as a brianlist