Multiple choice

A train takes 2 h to reach to station B from station A and then 3 h to return from station B to station A. The distance between the two stations is 200 km. Find the average speed.

  1. $40 \ kmh^{-1}$
  2. $80 \ kmh^{-1}$
  3. $\dfrac{1000}{6}  \ kmh^{-1}$

  4. None of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Average speed is total distance divided by total time. The total distance is 200 km (A to B) + 200 km (B to A) = 400 km. The total time is 2 h + 3 h = 5 h, so the average speed is 400/5 = 80 km/h.

AI explanation

Average speed equals Total Distance divided by Total Time. The total distance covered is the sum of the onward and return trips, which is 200 km plus 200 km, giving 400 km. The total time taken is 2 h plus 3 h, equaling 5 h. Dividing 400 km by 5 h gives an average speed of 80 km per hour. The average speed is 80 km/h.

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