Hey I am Ramandeep Singh. Do you want me to help you? Login Sign Up. Downstream: If the boat is moving in the direction of the stream. Upstream: If the boat is moving in the direction opposite to the direction of the stream.
Boat is moving with the steam of water. Boat is moving against the direction of the stream. Proof of Basic Formula. Downstream speed is always greater than the upward speed.
A man can row a boat 9 kmph in still water. He takes double the time to move upstream than to move the downstream � the same distance. Find the speed of the stream. A boat runs at 20 kmph along the stream and 10 kmph against the stream. Find the ratio of speed of the boat in still water to that of the speed of the stream. Example 3. Find the time taken by the boatman to row 4 kilometres downstream and return to his starting point, if the speed or rate of stream is 2 kilometres per hour and the speed of the boat is 6 kilometres per hour.
Example 4. If the speed of the stream is 2 km per hour, and the speed of the boat in still waters is 10 km per hour then find the time taken to cover 60 kms downstream. Example 5. Find the speed of the stream when a boat takes 5 hours to travel 60 kms downstream at a rate of 10 kms per hour in still water. Example 6.
A boat covers a certain distance in one hour downstream with the speed of 10 kmph in still water and the speed of current is 4 kmph. Then find out the distance travelled. Answer Example 7. A boat takes 6 hours to cover 36 km downstream and 8 hours to cover 32 km upstream. Then the speed of the boat in still water is?
Example 8. Then the speed of the stream is? Example 9. If a man rows 6 km downstream in 3 hours and 2 km upstream in 2 hours then how long will he take to cover 9 kms in stationary still water?
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