Question
Gillian and Reggie have a bicycle race. Gillian cycles at a speed of 20 km/h. Reggie cycles at a speed of 22 km/h. If Reggie lets Gillian start 30 min before him, how long will Reggie take to catch up with Gillian?
3 m

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Gillian and Reggie have a bicycle race. Gillian cycles at a speed of 20 km/h. Reggie cycles at a speed of 22 km/h. If Reggie lets Gillian start 30 min before him, how long will Reggie take to catch up with Gillian?