Multiple choice

A man walks at a speed of 8 km/h. After every kilometer, he takes a rest for 4 minutes. How much time will he take to cover a distance of 6 km?

  1. 70 minutes

  2. 60 minutes

  3. 69 minutes

  4. 65 minutes

  5. 68 minutes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The man covers 6 km at 8 km/h, taking 6/8 hours = 45 minutes of walking time. He rests after every kilometer, so he rests after 1, 2, 3, 4, and 5 km (he does not rest after the 6th km as he has arrived). Total rest time = 5 * 4 minutes = 20 minutes. Total time = 45 + 20 = 65 minutes.

AI explanation

The total time consists of walking time and rest time, calculated using the Time, Speed and Distance formula. The walking time for 6 km at 8 km/h is 6 divided by 8 hours, which is 0.75 hours or 45 minutes. Since the man rests for 4 minutes after each of the first 5 kilometers, the total rest time is 20 minutes, making the total time 45 plus 20, which is 65 minutes. He will take 65 minutes.

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