A boat travels upstream from point A to B in 5 hours What is the distance between A and B if it take...........

Quant (SSC) Boats and Streams

A boat travels upstream from point A to B in 5 hours. What is the distance between A and B, if it takes 2.5 hours to travel downstream from point B to A and speed of stream is 1 km per hour?

8 km

12 km

16 km

None of the above

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Explanation:

Let the speed of Boat be x km/hr

So the speed while going upstream will be (x – 1) km/hr and the speed going downstream will be (x + 1) km/hr

Since the distance traveled is the same, the equation can be formed as:

(x – 1) × 5 = (x + 1) × 2.5

⇒ x = 3
The distance between A and B is (3 + 1) × 2.5 = 10 km

By: Amit Kumar

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A boat travels upstream from point A to B in 5 hours What is the distance between A and B if it take...........

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