The distance between City Z and City A was 840 km apart. A bus travelled at an average speed of 98 km/h from City Z to City A. At the same time, a van travelled at an average speed of 70 km/h from City A to City Z. How much further did the bus travel than the van when the bus met the van on the way?
Combined speed of the bus and the van
= 98 + 70
= 168 km/h
Time taken for the bus and the van to meet
= 840 ÷ 168
= 5 h
Difference in the speed between the bus and the van
= 98 - 70
= 28 km/h
Distance that the bus travelled further than the van
= 5 x 28
= 140 km
Answer(s): 140 km