Question

A and B can do a piece of work in 15 days B and C can do a work in 1 days we can do it in 20 days how much time will a b and c can take to do it alone

Answer 1

If A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days, how long would it take them to do the same work separately