The distance between City B and City C was 900 km apart. A lorry travelled at an average speed of 95 km/h from City B to City C. At the same time, a van travelled at an average speed of 85 km/h from City C to City B. 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
= 95 + 85
= 180 km/h
Time taken for the lorry and the van to meet
= 900 ÷ 180
= 5 h
Difference in the speed between the lorry and the van
= 95 - 85
= 10 km/h
Distance that the lorry travelled further than the van
= 5 x 10
= 50 km
Answer(s): 50 km