Multiple choice

A man travels a certain distance by train at 25 km/hr and walks back at 4 km/hr. The whole journey took 5 hr 48 min. What distance did he travel by train?

  1. $64000 meters$
  2. $20000 meters$
  3. $74000 meters$
  4. $72000 meters$
  5. $70000 meters$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If d is the one-way distance, then time by train = d/25 and time walking = d/4. Total time is d/25 + d/4 = 5 hr 48 min = 29/5 hours. Solving: 29d/100 = 29/5, so d = 20 km = 20000 meters. The key is writing the total time equation and solving for d.

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