Question
Kimberly and David have a bicycle race. Kimberly cycles at a speed of 18 km/h. David cycles at a speed of 24 km/h. If David lets Kimberly start 40 min before him, how long will David take to catch up with Kimberly?
3 m

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Kimberly and David have a bicycle race. Kimberly cycles at a speed of 18 km/h. David cycles at a speed of 24 km/h. If David lets Kimberly start 40 min before him, how long will David take to catch up with Kimberly?