Question

A complete a work in 20 days.B in 30 days c in 60 days .If a work contiuesly ,on every third day a is assisited by b and c

Answer 1

Let Total Work = LCM(20,30,60) = 60 units

A can complete 3 units in one day

B can complete 2 units in one day

C can complete 1 units in one day

In every 3 days, 3x3 + 2 + 1 = 12 units will be completed.

So, work will be completed after 60/12 = 5 cycles.

=> 5 x 3 = 15 days