Three pipes can fill a tank in 15 hours, 12 hours and 10 hours, respec – McqOptions

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1.	Three pipes can fill a tank in 15 hours, 12 hours and 10 hours, respectively. If all the three pipes are opened simultaneously for 3 hours, then what percentage of the tank will remain unfilled?
A.	17%
B.	50%
C.	33%
D.	25%
Answer» E.

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