If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in

If 10 people can do a job in 20 days,then 20 people with twice the eff

1.	If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in
A.	5 days
B.	10 days
C.	20 days
D.	40 days
Answer» B. 10 days

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If 10 people can do a job in 20 days,then 20 people with twice the efficiency can do the same job in

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