The distance between City Y and City Z was 680 km apart. A lorry travelled at an average speed of 96 km/h from City Y to City Z. At the same time, a convertible travelled at an average speed of 74 km/h from City Z to City Y. How much further did the lorry travel than the convertible when the lorry met the convertible on the way?
Combined speed of the lorry and the convertible
= 96 + 74
= 170 km/h
Time taken for the lorry and the convertible to meet
= 680 ÷ 170
= 4 h
Difference in the speed between the lorry and the convertible
= 96 - 74
= 22 km/h
Distance that the lorry travelled further than the convertible
= 4 x 22
= 88 km
Answer(s): 88 km