Question

A & B together do a work 10 days. B & C together in is
days. C & A together do a work in 20 days. So A, B&C complete whole work in how many days?​

Answer 1

Answer:

A and B together can do a piece of work in 10 days, while B and C together can do it in 12 days and C and A together in 15 days. In how many days C would complete it alone? Hence C will finish the work in 40 days. So option [C] is correct answer.

Answer 2

Answer:

30 is the answer it's is the answer jhtgjnvbfbh