Sarthak can fill a sandpit with sand in 36 days while Vivan takes 90 d – McqOptions

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1.	Sarthak can fill a sandpit with sand in 36 days while Vivan takes 90 days to fill it. Ali can take the entire sand of a filled sand-pit out in 60 days. If all three starts working when the pit is empty, in how many days will the sandpit be full again?
A.	45
B.	54
C.	48
D.	50
Answer» B. 54

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