Gate Maths Puzzle Numerical Ability Time and Work

A cistern has a leak which would empty it in 10h. A tap is turned on which admits 4 L a minute into the cistern and it is now emptied in 15h. How many litres does the cistern hold?
(a) 7400 L
(b) 7200 L
(c) 7100 L
(d) 7500 L

Read Solution (Total 1)

the total time taken by the leakage to empty the cistern=1/10-1/15
=1/30
=30h
=30*60=1800min
SO , 1 min=4L
therefore 1800 min=4*1800=7200L
9 years agoHelpfull: Yes(3) No(0)

Gate Other Question

Two friends A and B working together completed a work in 26 days. Their skills of doing the work are in the ratio 8:5. How many days will B take, if engaged alone?
(a) 10 days
(b) 16 days
(c) 12 days
(d) 18 days There is a leak in the bottom of a cistern. Before the leak it could be filled in 9/2h. It now takes 1/2h longer. If the cistern is full, in how much time would the leakage empty the full cistern?
(a) 45h
(b) 40h
(C) 36h
(d) 56h