The distance between City H and City J was 990 km apart. A bus travelled at an average speed of 84 km/h from City H to City J. At the same time, a convertible travelled at an average speed of 81 km/h from City J to City H. How much further did the bus travel than the convertible when the bus met the convertible on the way?
Combined speed of the bus and the convertible
= 84 + 81
= 165 km/h
Time taken for the bus and the convertible to meet
= 990 ÷ 165
= 6 h
Difference in the speed between the bus and the convertible
= 84 - 81
= 3 km/h
Distance that the bus travelled further than the convertible
= 6 x 3
= 18 km
Answer(s): 18 km