MBA
Exam
Ten pipes working at full efficiency can fill a tank completely in 30 hours. Five pipes start filling thetank. The pipes work for exactly 40 minutes in every odd hour i.e. 1st hour, 3rd hour etc while theywork for exactly 50 minutes in every even hour i.e. 2nd hour, 4th hour etc. If seven more pipes (workingin the same manner as the existing five) are added after 12 hours, then in which hour will the tank befull? 1) 41 2) 40 3) 37 4) 33
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