Question

A, B, C, and D can do a piece of work in 20 days. If A and B can do it together in 50 days, and C alone in 60 days, find the time in which D alone can do it ?​

Answer 1

Answer:

75 days

Step-by-step explanation:

Let the time required by D alone to complete total task be x

We know ,

1/50 + 1/60 + 1/x = 1/20

11/300 + 1/x = 1/20

1/x = 1/20 - 11/300

1/x = 4/300

Therefore , x = 75 days

Answer 2

Answer:

hey

Step-by-step explanation:

Answer hai

75 days

hope it helps