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A pipe is filling a tank of 200 litres capacity at 5 litres/hr. Becaus

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A pipe is filling a tank of 200 litres capacity at 5 litres/hr. Becaus  [#permalink]

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New post 23 Oct 2019, 03:49
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A pipe is filling a tank of 200 litres capacity at 5 litres/hr. Because of a leak, it takes 80 hours more to fill the tank. What is the rate in litres/hr at which the water is leaking?

(A) 60
(B) 3
(C) 3.33
(D) 80
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Re: A pipe is filling a tank of 200 litres capacity at 5 litres/hr. Becaus  [#permalink]

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New post 27 Oct 2019, 23:23
the pipe would have filled water in 200/5 = 40 hours if leak was not there.

the pipe took 80 hours more because of leak
=> the pipe worked for 40+80 hrs= 120 hrs and filled 120*5 litres = 600 litres

=> 600-200= 400 litres of water leaked out in 120 hours
Rate of leakage per hour = 400/120

= 3.33 ltr/hr

(C) Ans
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Re: A pipe is filling a tank of 200 litres capacity at 5 litres/hr. Becaus   [#permalink] 27 Oct 2019, 23:23
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