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23 Oct 2019, 03:49
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
81% (01:32) correct
19%
(01:30)
wrong
based on 26
sessions
History
Date
Time
Result
Not Attempted Yet
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
(A) 60
(B) 3
(C) 3.33
(D) 80
27 Oct 2019, 23:23
Kudos
Bookmarks
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
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
30 Jun 2020, 05:44
Kudos
Bookmarks
If there was no leak then at the rate of 5l/hr, the tank would have been filled in 40 hours.
But it took 80 hours more.
Total time taken to fill the tank = 120 hours.
Rate at which the tank was being filled = \(\frac{200}{120} = \frac{5}{3}\) l/hr
The rate at which the water was leaking = \(5 - \frac{5}{3} = \frac{10}{3} = 3.33\)
OA, C
But it took 80 hours more.
Total time taken to fill the tank = 120 hours.
Rate at which the tank was being filled = \(\frac{200}{120} = \frac{5}{3}\) l/hr
The rate at which the water was leaking = \(5 - \frac{5}{3} = \frac{10}{3} = 3.33\)
OA, C
cfc198
