Multiple choice

A car covers a distance from Town I to Town II at the speed of 56 km/hr and from Town II to Town I at the speed of 53 km/hr. What is the average speed of the car?

  1. 53.5 km/hr

  2. 54 km/hr

  3. 55 km/hr

  4. None of these
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D Correct answer
Explanation

Average speed for two distances is (2 * v1 * v2) / (v1 + v2). (2 * 56 * 53) / (56 + 53) = 5936 / 109 = 54.45 km/hr.

AI explanation

Since the distances are equal, we use the average speed formula for equal distances: 2xy / (x + y). Substituting the speeds gives (2 * 56 * 53) / (56 + 53) = 5936 / 109 = 54.45 km/hr. This value is not present among the first three options, so the correct choice is None of these.

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