Question

A and b can do a work in 12 days, b and c in 15 days, c and a in 20 days. If a, b and c work together, then in how many days will they complete the work?

Answer 1

Answer:

Step-by-step explanation:

A and B together can do in 12 days

B and C together can do in 15 days

C and A in 20 days

So, A, B, C can together do in

1/12+1/15+/1/20

10+8+6/120

24/120

1/5

That is 5 days ✅