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