The distance between City P and City Q was 820 km apart. A car travelled at an average speed of 92 km/h from City P to City Q. At the same time, a bus travelled at an average speed of 72 km/h from City Q to City P. How much further did the car travel than the bus when the car met the bus on the way?
Combined speed of the car and the bus
= 92 + 72
= 164 km/h
Time taken for the car and the bus to meet
= 820 ÷ 164
= 5 h
Difference in the speed between the car and the bus
= 92 - 72
= 20 km/h
Distance that the car travelled further than the bus
= 5 x 20
= 100 km
Answer(s): 100 km