Question

One filling pipe P is three times faster than another filling pipe Q, if P can fill a tank in 24 hours,
then what is the time taken to completely fill the tank if both the pipes are opened together?
(A) 12 hours (B) 18 hours
(C) 16 hours (D) 14 hours

Answer 1

Answer:

the answer is Option B = 18 hours

Step-by-step explanation:

Let the tank capacity be 720 l

So Pipe P takes = 24 hours to fill the tank

So For 1 hour it fills 30 l

Similarly , Pipe Q takes , 72 hours to fill the tank .

So for one hour , It fills 10l

So both the pipes together will fill 40 liters in 1 hour .

So it takes 18 hours to fill the tank of 720 l.

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