Nal Ram and Raju can fill a tank in 10 and 15 minutes respectively whi – McqOptions

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1.	Nal Ram and Raju can fill a tank in 10 and 15 minutes respectively while Nal Shyam can empty it in 12 minutes. If all the three taps are turned on simultaneously, then in how much time will the empty tank be filled?
A.	14
B.	20
C.	12
D.	15
Answer» D. 15

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