Question

A und B can do a job in 25 days. After 15 days of working together. B leaves. A completes the remaining part of the job in 20 days, how long would each take to complet the job working separately?​

Answer 1

Step-by-step explanation:

let total work =25

{A+B} efficiency =1

after 15 days,

15×1 =15

remaining work =10

A efficiency = 10/20

= 1/2

B efficiency =1-1/2

= 1/2

A take = 25×2= 50days

B take = 25×2 =50 days