1.

A car is running at 7/10 of its own speed reached a place in 22 hours. How much time could be saved if the train would run at its own speed ?

Answer»

8hours



Since the car runs at 7/11 th of its own speed, the time it take is 11/7th of its usual speed.
let the usual time taken be t hours
then we can WRITE, 11T / 7 = 22
or t= 22 * 7 / 11 = 14 hours
Time saved= 22 - 14 = 8hours



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