The distance between City J and City K was 840 km apart. A convertible travelled at an average speed of 90 km/h from City J to City K. At the same time, a van travelled at an average speed of 78 km/h from City K to City J. How much further did the convertible travel than the van when the convertible met the van on the way?
Combined speed of the convertible and the van
= 90 + 78
= 168 km/h
Time taken for the convertible and the van to meet
= 840 ÷ 168
= 5 h
Difference in the speed between the convertible and the van
= 90 - 78
= 12 km/h
Distance that the convertible travelled further than the van
= 5 x 12
= 60 km
Answer(s): 60 km