Question
Charlie, Ian and Dylan started walking at the same time from the same starting point round a circular track. Dylan walked in the clockwise direction. Charlie and Ian walked in an anti-clockwise direction. Dylan took 6 min to complete each round. He met Charlie after every 2 minutes. He met Ian after every 5 minutes. The three friends kept to their respective speeds throughout their walk.
  1. How many rounds did Dylan complete in 1 h?
  2. When Dylan and Charlie met again at the starting point after 1 h, Ian had completed 1.3 km. Find the circumference of the circular track in metres.
5 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Charlie, Ian and Dylan started walking at the same time from the same starting point round a circular track. Dylan walked in the clockwise direction. Charlie and Ian walked in an anti-clockwise direction. Dylan took 6 min to complete each round. He met Charlie after every 2 minutes. He met Ian after every 5 minutes. The three friends kept to their respective speeds throughout their walk.
  1. How many rounds did Dylan complete in 1 h?
  2. When Dylan and Charlie met again at the starting point after 1 h, Ian had completed 1.3 km. Find the circumference of the circular track in metres.