A man travels a distance by bus at $15$ km/h and walks back at $12$ km/h. If the whole trip takes $9$ hours, the one-way distance is:
Practice this question from Chapter Mock 8: Speed, Time and Distance, with options and an explanation.
Question
A man travels a distance by bus at $15$ km/h and walks back at $12$ km/h. If the whole trip takes $9$ hours, the one-way distance is:
Option A
45 km
Option B
54 km
Option C — Correct answer
60 km
Correct choice.
Option D
72 km
Explanation
Distance $=\frac{xy}{x+y}\times t=\frac{15\times12}{27}\times9=60$ km.