Multiple choice

The ratio of the speed of two trains is 5 : 4. If the first train covers 500 kilometers in 5 hours, how long will it take the second train to cover the same distance?

  1. 5 hours

  2. 6 hours

  3. 6.25 hours

  4. 6.5 hours

  5. 7 hours

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Speed 1 = 500/5 = 100 km/h. Ratio 5:4 means Speed 2 = 80 km/h. Time = 500/80 = 6.25 hours.

AI explanation

The first train covers 500 kilometers in 5 hours, so its speed is 500 divided by 5, equaling 100 kilometers per hour. Since the ratio of their speeds is 5 to 4, the second train's speed is four-fifths of 100, which is 80 kilometers per hour. Using the formula time = distance divided by speed, the time taken by the second train is 500 divided by 80, which equals 6.25 hours.