Lesson eLearning

A bus travels a distance of 90 kilometres in 1 hour 30 minutes. What is the bus’s average speed in kilometres per hour?

medium MCQ 2 marks Class 6 · Science · Motion and Measurement of Distances
  1. 45 km/h
  2. 60 km/h
  3. 75 km/h
  4. 90 km/h
Answer
60 km/h

The correct answer is 60 km/h — Apply the speed formula: speed = distance ÷ time = 90 km ÷ 1.5 h = 60 km/h.

Step-by-step solution

  1. Convert the time to hours: 1 h 30 min = 1 + 30/60 = 1.5 h.
  2. Apply the speed formula: speed = distance ÷ time = 90 km ÷ 1.5 h = 60 km/h.
Common mistake: not converting minutes to hours before division

Concept tested: distance‑time‑speed relation

Published · How this solution was prepared and checked

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