A and b can do a piece of work in 25 days and 30 days respectively. They start work together but after some days a leaves the job .B alone does the remaining work in 8 days. Find after how many days does a leave the job
Answers
Answered by
1
I hope this help u...................
Attachments:
Answered by
3
A leaves the job after 10 days as:---
●A does piece of work in 25 days
●B does piece of work in 30 days
●Total work done by A and B is lcm of 25 and 30 which is 150.
●Efficiency of A =total work /no of days a does work =150/25=6
●Efficiency of B=total work/no of days b does work =150/30=5
●work done by B in 8 days =days ×efficiency=8×5=40
●remaining work out of total work=150-40=110 work
●this
remaining work has to be done by both A and B .
●So efficiency of A and B =6+5=11
●number of days they work together=work /efficiency
=110/11=10
●So A and B work together for 10 days .
Hence A leaves work after 10 days.
Similar questions