Question

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

Answer 1

Step-by-step explanation:

A & B together work for 15 days completing 15/25 x 100 = 60% work.

Remaining 40% work completed by A in 20 days.

=> A can complete full work alone in 20/40 x 100 = 50 days.

If A & B together complete the work in 25 days, it means A completes 50% of the work.

Remaining 50% of work also completed by B in 25 days.

=> B also takes 50 days to complete work alone.

Answer 2

Answer:

Is this question from the book "Essential ICSE Mathematics For Class 8"?

I am also having this book as I am reading in Class-8.