Multiple choice

A car covers a certain distance in 8 hours at a speed of 50 kmph. What should be the increase in speed to cover the same distance in 5 hours?

  1. 50 kmph

  2. 40 kmph

  3. 30 kmph

  4. 80 kmph
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Distance = 50 * 8 = 400 km. New speed required = 400 / 5 = 80 kmph. Increase in speed = 80 - 50 = 30 kmph.

AI explanation

Using the formula Distance = Speed x Time, the total distance covered by the car is 50 x 8 = 400 km. To cover this same distance in 5 hours, the required speed is 400 / 5 = 80 kmph. The required increase in speed is the difference between the new speed and the original speed, which is 80 - 50 = 30 kmph. The result is 30 kmph.

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