Question
Pamela and Oliver have a bicycle race. Pamela cycles at a speed of 14 km/h. Oliver cycles at a speed of 21 km/h. If Oliver lets Pamela start 30 min before him, how long will Oliver take to catch up with Pamela?
3 m

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Pamela and Oliver have a bicycle race. Pamela cycles at a speed of 14 km/h. Oliver cycles at a speed of 21 km/h. If Oliver lets Pamela start 30 min before him, how long will Oliver take to catch up with Pamela?