P,Q and R can do a work in 10 ,5,and 4days respectively.Find the time taken by Q and R to do a work together?
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Step-by-step explanation:
Work done by p in 4 days = 1/10 of 24 hours
Work done by Q in 5 days = 1/5 of 24 hours
Work done by Rin 1 days = 1/4 of 24 hours
Work done By (q and r) = 1/5 + 1/4 of 24 hours
= 1 day 8 hours
Time taken by ( q and r) = 1 day 8 hours
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