Calculate the time it will take for a full tank to become completely empty due to a leak given that
the tank could be filled in 7 hours, but due to the leak in its bottom it takes 8 hours to be filled ?  Choose one:
A) 59 hours
B) 54 hours
C) 59 hours
D) 56 hours
E) 26 hours
Part filled without leak in 1 hour = 1/7   Part filled with leak in 1 hour = 1/8   Work done by leak in 1 hour   =1/7âˆ’1/8=56 hours   Answer:56 hours
<result>D</result>
Calculate the time it will take for a full tank to become completely empty due to a leak given that
the tank could be filled in 7 hours, but due to the leak in its bottom it takes 8 hours to be filled ?