Question
Sarah and David have a bicycle race. Sarah cycles at a speed of 15 km/h. David cycles at a speed of 19 km/h. If David lets Sarah start 48 min before him, how long will David take to catch up with Sarah?
3 m

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Sarah and David have a bicycle race. Sarah cycles at a speed of 15 km/h. David cycles at a speed of 19 km/h. If David lets Sarah start 48 min before him, how long will David take to catch up with Sarah?