1. If a man can swim downstream at 6 kmph and upstream at 2 kmph, his speed in still water is * 4 km/hr 3 km/hr 2 km/hr 2.5 km/hr
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1 1. If a man can swim downstream at 6 kmph and upstream at 2 kmph, his speed in still water is * 4 km/hr 2. A man rows 750 m in 675 seconds against the stream and returns in 7 and half minutes. His rowing speed in still water is: * 5 km/hr 4 km/hr 6 km/hr 3.A man rows 13 km upstream in 5 hours and also 28 km downstream in 5 hours. The velociy of the stream is * 1.5 km/hr 4.A boat covers 24 km upstream and 36 km downstream in 6 hours while it covers 36 km upstream and 24 km downstream in 6 hours. The velocity of the current is : * 1 km/hr 1.5 km/hr 5. A man can row 9 and 1/3 kmph in still water and finds that it takes him thrice as much time to row up than as to row, down the same distance in the river. The speed of the current is * 3 and 1/ 4 and 2/ 3 and 1/
2 14 km/hr 6. A boat takes 4 hours for travelling downstream from point A to point B aild coming back to point A upstream. If the velocity of the stream is 2 kmph and the speed of the boat in still water is 4 kmph, what is the distance between A and B? * 8 km 6 km 9 km 4 km 7.. If anshul rows 15 km upstream and 21 km downstream taking 3 hours each time, th en the speed of the stream is : * 1 km/hr 1.5 km/hr 8. A man can row a boat at 10 kmph in still water. If the speed of the stream is 6 kmph, the time taken to row a distance of 80 km down thestream is * 10 hours 5 hours 8 hours 20 hours 9. If a boat goes 7 km upstream in 42 minutes and the speed of the stream is 3 kmph, then the speed of the boat in still water is * km/hr 10. *
3 A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively? * 2:1 3:2 8:3 cannot be determined 12. A motorboat, whose speed is 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. the speed of the stream (in km/hr) is: * In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is: * 8 km/hr 5 km/hr 14. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is: * 3:2 4:3 3:1
4 2:1 15. If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream? * 1 26 km/hr 34 km/hr None of these. 16. A ship leaves on a long voyage. When it is 18 miles from the shore, a seaplane, whose speed is 10 times that of the ship, is sent to deliver mail. How far from the shore, does the seaplane catch up with the ship? * 24 miles 25 miles 22 miles 20 miles 17. A crew can row 10 miles in 5/6 th of an hour down-stream and 12 miles upstream in 90 minutes. Find the current's rate and crew's rate in still water. * 12 mph, 4 mph 10 mph, 2 mph 8 mph, 4 mph 12 mph, 2 mph 18. A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 km upstream and 90 km downstream in 12 hours. Find the rate of current. * 3 kmph 8 kmph 4 kmph 6 kmph 19. A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is: *
5 A boat can travel with a speed of 1 in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream. * 2 hours 3 hours 4 hours 5 hours 21. A man's speed with the current is 15 km/hr and the speed of the current is. The man's speed against the current is * 8.5 km/hr 10 km/hr A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively? * 2:1 3:2 8:3 Cannot be determined 23. A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is: * 4 5 6
6 In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is * 5 km/hr 8 km/hr 25. A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water? * 4 km/hr 6 km/hr 8 km/hr Data Inadequate
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