Multiple choice

Two students run over a distance at the rate of 25 km/hr and 20 km/hr, respectively. Find the distance travelled when one takes 6 minutes longer than the other.

  1. 8 km

  2. 10 km

  3. 12 km

  4. 15 km
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B Correct answer
Explanation

Let distance be D. Time difference = D/20 - D/25 = 6/60 hours. D/100 = 1/10, so D = 10 km.

AI explanation

Let the distance traveled be D kilometers; using the formula time equals distance divided by speed, the difference in time taken by the two students is (D / 20) - (D / 25) hours. Given that this difference is 6 minutes, or 0.1 hours, the equation becomes D / 100 = 0.1. Solving for D gives a distance of 10 km.

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