Question
P6.SP.TL.18012288-A1
Riordan and Elizabeth were planning to run on a circular track with a circumference of 700 m. Both of them started jogging together at the same start point and moved round the track in a clockwise direction at uniform speeds. Riordan completed a full round in 70 s. Elizabeth completed a full round in 50 s.
  1. How long would it take for Elizabeth to overtake Riordan for the first time?
  2. How far was Elizabeth ahead of Riordan after 14 s?
4 m
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Primary 6 SPEED P6.SP.TL.18012288

20 May 2024, 03:36 PM

Riordan and Elizabeth were planning to run on a circular track with a circumference of 700 m. Both of them started jogging together at the same start point and moved round the track in a clockwise direction at uniform speeds. Riordan completed a full round in 70 s. Elizabeth completed a full round in 50 s.
  1. How long would it take for Elizabeth to overtake Riordan for the first time?
  2. How far was Elizabeth ahead of Riordan after 14 s?
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