Question

A can do a piece of work in 25 days and b in 20 days. with the help of c they finish the work in 8 days. how long will it take c alone to finish the work​

Answer 1

Answer:

200/7=28 4/7

Step-by-step explanation:

Given,

A can do a piece of work in 25 days

A=1/25

b in 20 days.

B=1/20 days

with the help of c they finish the work in 8 days.

A+B+C=1/8 days   -----(1)

how long will it take c alone to finish the work​

C=1/8-A-B    from Eq(1)

C=1/8-1/25-1/20

C=7/200