Question
City D and City E were 540 km apart. A sports car travelled from City D towards City E. At the same time, a lorry started from City E to City D. After travelling 134 h, the two vehicles were still 288 km apart. If the ratio of the average speed of the lorry to that of the sports car was 4 : 5, find
  1. the average speed of the lorry.
  2. the time taken for them to meet travelling the rest of the journey. Express your answer in h.
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

City D and City E were 540 km apart. A sports car travelled from City D towards City E. At the same time, a lorry started from City E to City D. After travelling 134 h, the two vehicles were still 288 km apart. If the ratio of the average speed of the lorry to that of the sports car was 4 : 5, find
  1. the average speed of the lorry.
  2. the time taken for them to meet travelling the rest of the journey. Express your answer in h.