Multiple choice

A car takes 5 hours to cover a distance of 300 km. How much should the speed in km/hour be maintained to cover the same distance in 4/5th of the previous time?

  1. 48

  2. 60

  3. 75

  4. 90

  5. 100
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Original time = 5 hours, distance = 300 km. New time = 4/5 * 5 = 4 hours. New speed = distance / time = 300 / 4 = 75 km/hour.

AI explanation

The original speed of the car is calculated using the formula Speed equals Distance divided by Time, which is 300 km divided by 5 hours, yielding 60 km/hour. The new time required is 4/5 of the previous time, calculated as 4/5 times 5 hours, equaling 4 hours. To cover the 300 km distance in 4 hours, the required speed is 300 divided by 4, resulting in 75 km/hour. The result is 75.

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