A boat goes 24 km upstream and 28 km downstream in 6 hours. It goes 30 km upstream and 21 km downstream in 6 hours and 30 minutes. The speed of the boat in still water is:
A steamer goes downstream from one part to another in 4 hours. It covers the same distance upstream in 5 hours. If the speed of stream is 2 km/hr., the distance between the two ports is
A person can row a boat d km upstream and the same distance downstream in 5 hours 15 min. Also he can row the boat 2d km upstream in 7 hours. How long will it take to row the same distance 2d km downstream?
The speed of a boat in still water is 8 km/nr. It can travel 20 km downstream at the same time as it can travel 12 km upstream, the rate of stream (in kmph) is
. A man swimming in a stream which flows 1.5 km/hr., finds that in a given time he can swim twice as fast with the stream as he can against it. At what rate does he swim?
A man can row three-quarters of a kilometre against the water stream in \[11\frac{1}{4}\] minutes and alone the stream in \[7\frac{1}{2}\] minutes 42 respectively. The speed in (km/hr.) of the man in still water is
A man rows 10 km upstream and back again to the starting point in 55 min. If the speed of stream is 2 km/hr., then the speed of rowing in still water is
A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in \[6\frac{1}{2}\] hour. The velocity of the current is
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
A boat takes 19 hours for travelling downstream from point A to point B and coming back to point C, midway between A and B. If the velocity of the stream is 4 km/hr. and the speed of the boat in still water is 14 km/hr. then the distance between A & B is
A man rows a distance downstream in 45 min and the same distance upstream in 75 min. What is the ratio of speed of the stream to the boat in still water?
Aman can row 5 kmph in the still water. If the river is running at 2 kmph, it takes him 5 hours to row up to a place and come down. How far is the place?