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A boat can travel with a speed of 22 km/hr in still water. If the speed of the stream is 5 km/hr, find the time taken by the boat to go 54 km downstream

5 hours
4 hours
3 hours
2 hours
Explanation:

Speed of the boat in still water = 22 km/hr

speed of the stream = 5 km/hr

Speed downstream = (22+5) = 27 km/hr

Distance travelled downstream = 54 km

Time taken $=\dfrac{\text{distance}}{\text{speed}} = \dfrac{54}{27}\text{ = 2 hours}$

Additional Questions

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In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water in km/hr is:

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If a mans rate with the current is 15 km/hr and the rate of the current is 11/2 km/hr, then his rate against the current is

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The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?

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A man rows to a place 48 km distant and back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is :

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