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Get access to the detailed solutions to the previous years questions asked in IIFT exam
Tap A alone can fill the tank in 12 hours
Tap B alone can fill the tank in 12*1.5 = 18 hours
Tap C alone can empty the tank in 36 hours
Let the total volume of the tank be 36 units
A fills 3 units, B fills 2 units and C empties 1 units in an hour.
Let the total time taken be 't'
t(3) + (t-2)2 - 6(1) = 36
5t = 46
t = 9.2 hrs = 9 hours 12 minutes
The answer is option C.