The distance between City T and City U was 700 km apart. A lorry travelled at an average speed of 92 km/h from City T to City U. At the same time, a van travelled at an average speed of 83 km/h from City U to City T. How much further did the lorry travel than the van when the lorry met the van on the way?
Combined speed of the lorry and the van
= 92 + 83
= 175 km/h
Time taken for the lorry and the van to meet
= 700 ÷ 175
= 4 h
Difference in the speed between the lorry and the van
= 92 - 83
= 9 km/h
Distance that the lorry travelled further than the van
= 4 x 9
= 36 km
Answer(s): 36 km