Question
Sarah and Wesley have a bicycle race. Sarah cycles at a speed of 16 km/h. Wesley cycles at a speed of 18 km/h. If Wesley lets Sarah start 30 min before him, how long will Wesley take to catch up with Sarah?
3 m

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Sarah and Wesley have a bicycle race. Sarah cycles at a speed of 16 km/h. Wesley cycles at a speed of 18 km/h. If Wesley lets Sarah start 30 min before him, how long will Wesley take to catch up with Sarah?