Two trains move in opposite directions at $54$ km/h and $72$ km/h. Their relative speed is:
Practice this question from Chapter Mock 8: Speed, Time and Distance, with options and an explanation.
Question
Two trains move in opposite directions at $54$ km/h and $72$ km/h. Their relative speed is:
Option A
18 km/h
Option B
54 km/h
Option C
72 km/h
Option D — Correct answer
126 km/h
Correct choice.
Explanation
Opposite directions means add the speeds: $54+72=126$ km/h.