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A man takes 5 minutes to cover a certain distance at a speed of 6 km / h. If he walks with a speed of 10 km / h, how long will he take to cover the same distance?
1. 4 minutes
2. 2 minutes 30 seconds
3. 3 minutes
4. 2 minutes

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Correct Answer - Option 3 : 3 minutes

Given:

A man takes 5 minutes to cover a certain distance at a speed of 6 km/h.

Formula used:

Speed = Distance/TIme

Calculation:

Distance = Speed × Time

⇒ 6 × 5

New speed is 10 km/h

⇒ Time = Distance/Speed

⇒ Time = (6 × 5)/10

⇒ Time = 3 minutes

∴ The man will take 3 minutes.

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