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The speed of a boat itself is 30 km/h and the rate of flow of the stream is 5 km/h. Moving against the stream the boat went 200 m. What distance will the boat cover during the same time going in the direction of the stream?

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The speed of a boat itself is 30 km/h and the rate of flow of the stream is 5 km/h. Moving against the stream the boat went 200 m. What distance will the boat cover during the same time going in the direction of the stream?


1). 100 m
2). 145 m
3). 250 m
4). 280 m


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1 answers

2 vote
Answered by on | Votes 2 |

Let the distance to be covered by the boat when it is travelling in direction of the stream be x.

Downstream speed = 30 + 5 = 35 km/h

Upstream speed = 30 – 5 = 25 km/h.

Since the time taken is same x/35 = 200/25

⇒ x = 280 m.

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