Question
P6.SP.TL.18012288-A1
Riordan and Harris were planning to run on a circular track with a circumference of 900 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 90 s. Harris completed a full round in 50 s.
  1. How long would it take for Harris to overtake Riordan for the first time?
  2. How far was Harris ahead of Riordan after 18 s?
4 m
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Primary 6 SPEED P6.SP.TL.18012288

02 Jun 2024, 01:08 AM

Riordan and Harris were planning to run on a circular track with a circumference of 900 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 90 s. Harris completed a full round in 50 s.
  1. How long would it take for Harris to overtake Riordan for the first time?
  2. How far was Harris ahead of Riordan after 18 s?
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