Q 60. Ajay can do a piece of work in 10 days and Harshal can do same work in 12 days.
They started working together but Ajay left the work 2 days before completion of work, then
time taken to complete the work?
Answers
Given : Ajay can do a piece of work in 10 days and Harshal can do same work in 12 days.
They started working together but Ajay left the work 2 days before
completion of work
To Find : how much time taken to complete the work?
Solution:
Ajay can do a piece of work in 10 days
Ajay 1 day work = 1/10
Harshal can do a piece of work in 12 days
Harshal 1 day work = 1/12
Their 1 day work = 1/10 + 1/12 = 11/60
Their n days work = n * 11/60
Last 2 Days work by Harshal = 2 (1/12) = 1/6
Remaining work done by both = 1 - 1/6 = 5/6
n * 11/60 = 5/6
=> n = 50/11
=> n = 4.545
Total time Taken = 4.545 + 2 = 6.545 Days
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