A coach driver records one trip.Trip Distance (km) Time (hours) Depot to port 120 2
At the same average speed, how many hours would a 180 km journey take?
Answer and explanation
Correct answer: D. 3 hours
- Step 1: Speed = 120 / 2 = 60 km/h. Step 2. Time = 180 / 60 = 3 hours. Answer: 3 hours. Why not the others: 1.5 hours is the ratio of the distances, not a time (180 / 120); 1 hours is only the time for the extra 60 km beyond the recorded trip; 3.6 hours multiplies the recorded time by the distance divided by 100, which has no meaning here.
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