Question
Esther and Sean have a bicycle race. Esther cycles at a speed of 16 km/h. Sean cycles at a speed of 24 km/h. If Sean lets Esther start 30 min before him, how long will Sean take to catch up with Esther?
3 m

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Esther and Sean have a bicycle race. Esther cycles at a speed of 16 km/h. Sean cycles at a speed of 24 km/h. If Sean lets Esther start 30 min before him, how long will Sean take to catch up with Esther?