Mahesh and umesh can complete a work in 10 days and 15 days respectively umesh starts the work and after 5 days mahesh also joins him in all the work would be completed in
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Answer:
9 days
Step-by-step explanation:
Umesh's 5 day's work = 5 x (1/15) = 1/3
Remaining work = (1 - 1/3) = 2/3
(1/10 + 1/15) work is done by both in 1 day
∴ 2/3 work is done by both in 6 x (2/3) = 4 days
Hence, the work was completed in 4 + 5 = 9 days
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