Question

A and B can do a piece of work in 12 days B and C in 18 days C and A in 15 days in how many days can A B C finish it if they all work together​

Answer 1

Answer:

9.72

Step-by-step explanation:

since (A+B) complete 1/12 work in 1 day

since (B+C) complete 1/18 work in 1 day

since (A+C)complete 1/15 work in 1 day

2(a+b+c) =(1/12+1/18+1/15)

since (_10_+15_+12_)

180

since ( 37 )

180

since 180×2÷37

than value is 9.72