Question
Gillian and Lee have a bicycle race. Gillian cycles at a speed of 16 km/h. Lee cycles at a speed of 19 km/h. If Lee lets Gillian start 45 min before him, how long will Lee take to catch up with Gillian?
3 m

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Gillian and Lee have a bicycle race. Gillian cycles at a speed of 16 km/h. Lee cycles at a speed of 19 km/h. If Lee lets Gillian start 45 min before him, how long will Lee take to catch up with Gillian?