SSC Government Jobs Exams Numerical Ability Time Distance and Speed

A man driving at 3/4th of his original speed reaches his destination 20 minutes later than the usual time. Then the usual time is

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SSC Other Question

A motor-boat can travel at 10 km/hr in still water. It travelled 91 km downstream in a river and then returned to the same place, taking altogether 2 hours. Find the rate of flow of river- If a sum of money placed at compound interest, compounded annually, doubles itself in 5 years, then the same amount of money will be 8 times of itself in