Question

(iii) A, B, and C working together can do a piece of work in 8 hours. A along can do it in 20 hours and B alone can do it
in 24 hours. In how many hours will Calone do the same work?​

Answer 1

Answer:

Ans- 30 hrs

Step-by-step explanation:

A can do work in 20 hrs

so, in 1 hr A can do 1/20 work

1/20 +1/24 + 1/c = 1/8

1/c = 1/8 - 1/20 - 1/24

1/c = 15-6-5/ 120

1/c = 4 / 120

c = 30