Multiple choice

Two buses started simultaneously from the same place and towards the same destination at the speeds of 75 km/h and 57 km/h. What would be the distance between the buses after 3 hours and 25 minutes?

  1. 63.5 km

  2. 61.5 km

  3. 60.5 km

  4. 70.5 km
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Relative speed = 75 - 57 = 18 km/h. Time = 3 hours 25 minutes = 3 + 25/60 = 3 + 5/12 = 41/12 hours. Distance = Relative speed * Time = 18 * (41/12) = 1.5 * 41 = 61.5 km.

AI explanation

The relative speed of the two buses moving in the same direction is 75 km/h minus 57 km/h, which equals 18 km/h. The total time given is 3 hours and 25 minutes, which is 3 plus 5/12 hours, or 41/12 hours. The distance between them is the relative speed multiplied by time, calculated as 18 multiplied by 41/12, resulting in 61.5 km.

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