The distance between City D and City E was 680 km apart. A car travelled at an average speed of 99 km/h from City D to City E. At the same time, a van travelled at an average speed of 71 km/h from City E to City D. How much further did the car travel than the van when the car met the van on the way?
Combined speed of the car and the van
= 99 + 71
= 170 km/h
Time taken for the car and the van to meet
= 680 ÷ 170
= 4 h
Difference in the speed between the car and the van
= 99 - 71
= 28 km/h
Distance that the car travelled further than the van
= 4 x 28
= 112 km
Answer(s): 112 km