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A tap can fill a tank in 48 minutes, where as another tap can empty it in 2 hours. If both the taps are opened at 11:40 am then the tank will be filled at

A12:40 PM

B1:30 PM

C1:00 PM

D1:20 PM

Answer:

C. 1:00 PM

Read Explanation:

xy/(y-x) = (48x120)/(120-48) x=48 = (48 x 120)/72 y=2 hr. =80 =120 minutes 11:40+80 minutes=1:00 pm


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