961. A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water??
A. 15 kmph
B. 10 kmph
C. 12 kmph
D. 12.5 kmph

962. A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively??
A. 13, 3
B. 12, 6
C. 15, 3
D. 14, 4

963. A boat is rowed downstream at 15.5km/hr and upstream at 8.5 km/hr. The speed of the stream is________??
A. 3.5km/hr
B. 5.75km/hr
C. 6.5km/hr
D. 7km/hr

964. The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres??
A. 10 seconds
B. 15 seconds
C. 20 seconds
D. 12 seconds

965. A person can row at 9 kmph and still water. He takes 4 1/2 hours to row from A to B and back. What is the distance between A and B if the speed of the stream is 1 kmph??
A. 32 km
B. 25 km
C. 28 km
D. None of these

966. A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water??
A. 3.5km/hr
B. 5.5 km/hr
C. 6 km/hr
D. None of these

967. A boat goes 24 km downstream in 10 hours, it takes 2 hours more to cover the same distance against the stream. What is the speed of the boat in still water??
A. 2km/hr
B. 2.8 km/hr
C. 4 km/hr
D. None of these

968. A boat covers a distance of 30 km in 2 Â½ hours running downstream while returning it covers the same distance in 3 Â¾ hours. What is the speed of the boat in still water??
A. 8km/hr
B. 12km/hr
C. 14 km/hr
D. None of these

969. The speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. The speed of the stream is_______??
A. 5km/hr
B. 8 km/hr
C. 10 km/hr
D. 15 km/hr

970. A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current??
A. 3 kmph
B. 1.5 kmph
C. 13 kmph
D. 6.5 kmph