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

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