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Quant Quiz on Boats and Streams 20.05.2018

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Question 1

A man row 12 km in 5 hr against the stream and the speed of current being 4 km/h. What time will be taken by him to row 15 km with the stream?

Question 2

By walking 11/9 of his usual speed a man covers a certain distance 2 hours earlier than the time taken by him to cover the distance at original speed. Find the time taken by him to cover the distance with usual speed.

Question 3

A river 3 m deep and 40 m wide is flowing at the rate of 2 km/h. How much water (in litres) will fall into the sea in 1 minute?

Question 4

A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, the time taken by the man to swim the same distance upstream is

Question 5

A man can row kmph in still water. If in a river running at 1.5 km an hour, it takes him 50 minutes to row to a place and back, how far off is the place ?

Question 6

A motor boat takes 2 h to travel a distance of 9 km down the current and it takes 6 h to travel the same distance against the current. The speed of the boat in still water and that of the current (in km/h), respectively are

Question 7

A motor boat, travelling at the same speed, can cover 25 km upstream and 39 km downstream in 8 hours. At the same speed, it can travel 35 km upstream and 52 km downstream in 11 hours. The speed of the stream is
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