The distance between City J and City K was 780 km apart. A van travelled at an average speed of 81 km/h from City J to City K. At the same time, a bus travelled at an average speed of 75 km/h from City K to City J. 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
= 81 + 75
= 156 km/h
Time taken for the van and the bus to meet
= 780 ÷ 156
= 5 h
Difference in the speed between the van and the bus
= 81 - 75
= 6 km/h
Distance that the van travelled further than the bus
= 5 x 6
= 30 km
Answer(s): 30 km