Poll Results
Please login to vote and see the results.
A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and ,then both leave the work. Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work ?
Share
Explanation:
(A+B)′s 7 days work is:
(3+2)×7=35 units
work left:60−35=25 units
If C does 25 units of work in 10 days. It means C does 2.5 units/day
C complete the whole work in
T.W\ efficiency ofC=60\ 2.5=24 days