If part of tank filled in one hour = 1/10 then time required to fill t

1.	If part of tank filled in one hour = 1/10 then time required to fill the tank.
A.	8
B.	12
C.	10
D.	15
Answer» D. 15

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If part of tank filled in one hour = 1/10 then time required to fill the tank.

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