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

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