Question
Gem and Oliver have a bicycle race. Gem cycles at a speed of 20 km/h. Oliver cycles at a speed of 23 km/h. If Oliver lets Gem start 27 min before him, how long will Oliver take to catch up with Gem?
3 m

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Gem and Oliver have a bicycle race. Gem cycles at a speed of 20 km/h. Oliver cycles at a speed of 23 km/h. If Oliver lets Gem start 27 min before him, how long will Oliver take to catch up with Gem?