The distance between City C and City D was 820 km apart. A van travelled at an average speed of 91 km/h from City C to City D. At the same time, a car travelled at an average speed of 73 km/h from City D to City C. How much further did the van travel than the car when the van met the car on the way?
Combined speed of the van and the car
= 91 + 73
= 164 km/h
Time taken for the van and the car to meet
= 820 ÷ 164
= 5 h
Difference in the speed between the van and the car
= 91 - 73
= 18 km/h
Distance that the van travelled further than the car
= 5 x 18
= 90 km
Answer(s): 90 km