A can do a job in 20 days, B in 30 days and C in 60 days. If A is help – McqOptions

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1.	A can do a job in 20 days, B in 30 days and C in 60 days. If A is helped on every 3rd day by B and C, then in how many days, the job is finished?
A.	12 days
B.	15 days
C.	20 days
D.	10 days
Answer» C. 20 days

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