Q. |
Rajesh can complete a piece of work in 20 days, Rakesh in 30 days and Ramesh in 60 days. In how many days can they together complete the same work? |
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A. 8 |
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B. 10 |
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C. 12 |
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D. 15 |
Let the total work to be completed = 60 units (LCM of 20, 30 & 60)
In one day Rajesh can do 3 units, Rakesh 2 units, and Ramesh 1 unit.
In 1 day, they together can complete 3 + 2 +1 = 6 units
To complete 60 units, they will take 60/6 = 10 days