10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?

10 persons can do a job in X days. If 20 persons with twice the effici

1.	10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?
A.	40
B.	15
C.	20
D.	30
Answer» D. 30

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10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?

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