Question

A and B can do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. How long will

each take separately to do the same work?

Answer 1

Time taken by A and B = 12 days
Time taken by A = 12/2 = 6
Time taken by B = 12/2 = 6

Time taken by B and C = 15 days
Time taken by B = 15/2 = 7.5
Time taken by C = 15/2 = 7.5

Time taken by C and A = 20 days
Time taken by C = 20/2 = 10
Time taken by A = 20/2 = 10

If they take the work separately.