Q. A tap can empty a tank in one hour. A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank? - Study24x7
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3636 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

Q. A tap can empty a tank in one hour. A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank?

A

20 minutes

B

30 minutes

C

40 minutes

D

45 minutes

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