Question
Chloe and Grace were planning to run on a circular track with a circumference of 800 m. Both of them started jogging together at the same start point and moved round the track in a clockwise direction at uniform speeds. Chloe completed a full round in 80 s. Grace completed a full round in 40 s.
  1. How long would it take for Grace to overtake Chloe for the first time?
  2. How far was Grace ahead of Chloe after 20 s?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Chloe and Grace were planning to run on a circular track with a circumference of 800 m. Both of them started jogging together at the same start point and moved round the track in a clockwise direction at uniform speeds. Chloe completed a full round in 80 s. Grace completed a full round in 40 s.
  1. How long would it take for Grace to overtake Chloe for the first time?
  2. How far was Grace ahead of Chloe after 20 s?