Multiple choice

A car covers a certain distance in 45 minutes at a speed of 60 kmph. What should be the speed in kmph, if it was to cover the same distance 5 minutes earlier?

  1. 62

  2. 58.25

  3. 55

  4. 67.5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Distance = speed * time = 60 kmph * (45/60) h = 45 km. New time = 45 - 5 = 40 minutes = 40/60 h = 2/3 h. New speed = 45 / (2/3) = 45 * 1.5 = 67.5 kmph.

AI explanation

Using the formula Distance = Speed * Time, the distance covered is 60 * (45/60) = 45 km. To cover this same distance in 40 minutes, which is 5 minutes earlier than 45 minutes, the required speed is 45 / (40/60) = 67.5 kmph. The required speed is 67.5 kmph.

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