Question
Min and David have a bicycle race. Min cycles at a speed of 20 km/h. David cycles at a speed of 23 km/h. If David lets Min start 45 min before him, how long will David take to catch up with Min?
3 m

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Min and David have a bicycle race. Min cycles at a speed of 20 km/h. David cycles at a speed of 23 km/h. If David lets Min start 45 min before him, how long will David take to catch up with Min?