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A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, the time taken by the man to swim the same distance upstream is -

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Question

A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, the time taken by the man to swim the same distance upstream is

Options

  • 1 hour 30 minutes

  • 45 minutes

  • 2 hours 30 minutes

  • 3 hours

MCQ

Solution

3 hours

Explanation:

`x + 5` = 15 kmph

`x` = 10 kmph

Now, t = `15/5` = 3 hours

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Boats and Streams (Entrance Exam)
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