Question

‘A’ alone can complete a work in 50 hours. ‘A’

Q: Answer-‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it f...

Let the total work 250 units Then, efficiency of A 25050 5 unitshour Work completed by A alone in 10 hours 5 10 50 units Remaining work 250 50 200 units So, efficiency of B 20010 20 unitshour Therefore, combined efficiency of A and B 20 5 25 unitshour So, time taken by A and B together to complete the work 25025 10 hours

started the work alone and left after working on it for 10 hours. If ‘B’ completed the rest of the work in 10 hours then find the time taken by ‘A’ and ‘B’ together to complete the whole work.

A 8 hours

B 6 hours

C 10 hours

D 9 hours

Practice Next

Relevant for Exams:

NABARD GRADE A

‘A’ alone can complete a work in 50 hours. ‘A’

Solution

Relevant for Exams: