A rowing team rows a boat and covers a distance of 15 km in 5 hours while going upstream. When they go downstream, they cover a distance of 24 km in 4 hours. Find the speed of the boat in still water?
A5 km/h
B4.5 km/h
C3.5 km/h
D1.5 km/h
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On a river, Q is the mid-point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P ?
Speed of a boat is 5 km per hour in still water and the speed of the stream is 3 km per hour. If the boat takes 3 hours to go to a place and come back, the distance of the place is :
A boat has to travel upstream 20 km distance from point X of a river to point Y. The total time taken by boat in travelling from point X to Y and Y to X is 41 minutes 40 seconds. What is the speed of the boat?
A man rows a boat 18 kilometres in 4 hours down-stream and returns upstream in 12 hours. The speed of the stream (in km per hour) is :