The distance between City C and City D was 840 km apart. A van travelled at an average speed of 92 km/h from City C to City D. At the same time, a lorry travelled at an average speed of 76 km/h from City D to City C. How much further did the van travel than the lorry when the van met the lorry on the way?
Combined speed of the van and the lorry
= 92 + 76
= 168 km/h
Time taken for the van and the lorry to meet
= 840 ÷ 168
= 5 h
Difference in the speed between the van and the lorry
= 92 - 76
= 16 km/h
Distance that the van travelled further than the lorry
= 5 x 16
= 80 km
Answer(s): 80 km