Question
Julian drove from Town B to Town C which was 420 km away. He started from Town B at an average speed of 63 km/h. He maintained this speed for 4 h before increasing it by 9 km/h for the rest of the journey to Town C.
  1. How long did he take to complete the whole journey?
  2. What was his average speed from Town B to Town C?
4 m
(a)

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(b)

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Julian drove from Town B to Town C which was 420 km away. He started from Town B at an average speed of 63 km/h. He maintained this speed for 4 h before increasing it by 9 km/h for the rest of the journey to Town C.
  1. How long did he take to complete the whole journey?
  2. What was his average speed from Town B to Town C?