1.

If Suiesh and Maliesh can do a work in 12 days, Mahesh ard Ramesh in 15 days, Suresh and Ramesh in 20 days, how long will each Suresh. Mahesh and Ramesh rake to finish the work?

Answer»

Mahesh and suresh can do a work in =12days mahesh and suresh 1 day work = 1/12mahesh and ramesh can do work in = 15 daystheir one day work= 1/15 suresh and ramesh can do work in = 20 days their one day work = =1/20

so, the total time all of them take to complete the work is = 1/12+1/15+1/20 = 12/60

Total time = 12/60= 1/5 or 5 days

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