Monday, July 15, 2013

IPM mega final STD IV answers

A 12 litre tank is filled with water at the rate of 1/4 litre in 5 secs. How much time will it take to fill 5/6 of the tank?




Answer

Water to be filled = 5/6 x 12 = 10 litres = 10000 ml 

now 250 ml is filled in 5 sec.

therefore, time taken by  water to fill the tank = (10000 /250) x 5 = 200 secs = 3 mins and 20 sec




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