Q.1) A man can row upstream 10 km/hr and downstream 20 km/hr. Find the man rate in still water?
Ans: 15 km/hr
Q.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-
Ans: 5 km/hr
Q.3) If Rahul rows 15 km upstream in 3 hours and 21 km downstream in 3 hours, then the speed of the stream is -
Ans: 1 km/ hr
Q.4) A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the current.
Ans: 1 km/hr
Q.5) A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream. The ratio of the speed of the boat in still water and stream is-
Ans: 3:1
Q.6) If a stream running at 2 km/hr, a motorboat goes 6 km upstream and back again to the starting point in 33 minutes. Find the speed of the motorboat in still water.
Ans: 22km/hr
Q.7) In one hour a boat goes 11 km along the stream and 5 km against the stream. Then find the speed of the boat in still water (in km/hr)?
Ans: 8 km/hr
Q.8) A boat can row 13 km/h in still water. If the speed of the stream 4km/h .find the time taken by the boat go 68 km downstream?
Ans: 68/17 hours
Q.9) A boatman can row 4 km against the stream in 20 minutes and return in 15 minutes. Find the rate of current?
Ans: 2 km/hr
Q.10) 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 ½ hours. The velocity of the current is-
Ans: 2 km/hr
Ans: 15 km/hr
Q.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-
Ans: 5 km/hr
Q.3) If Rahul rows 15 km upstream in 3 hours and 21 km downstream in 3 hours, then the speed of the stream is -
Ans: 1 km/ hr
Q.4) A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the current.
Ans: 1 km/hr
Q.5) A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream. The ratio of the speed of the boat in still water and stream is-
Ans: 3:1
Q.6) If a stream running at 2 km/hr, a motorboat goes 6 km upstream and back again to the starting point in 33 minutes. Find the speed of the motorboat in still water.
Ans: 22km/hr
Q.7) In one hour a boat goes 11 km along the stream and 5 km against the stream. Then find the speed of the boat in still water (in km/hr)?
Ans: 8 km/hr
Q.8) A boat can row 13 km/h in still water. If the speed of the stream 4km/h .find the time taken by the boat go 68 km downstream?
Ans: 68/17 hours
Q.9) A boatman can row 4 km against the stream in 20 minutes and return in 15 minutes. Find the rate of current?
Ans: 2 km/hr
Q.10) 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 ½ hours. The velocity of the current is-
Ans: 2 km/hr