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Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work?
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Explanation:
Ramesh and Rahman 10 days work is=(5+4)×10=90
Remaining work = 100−90= 10
This work is completed by Suresh in 3 days.
So Suresh efficiency is =10\3
Total work done by Suresh in
=100\ 10\3=30 days