Question
Elyse and Oliver have a bicycle race. Elyse cycles at a speed of 20 km/h. Oliver cycles at a speed of 22 km/h. If Oliver lets Elyse start 30 min before him, how long will Oliver take to catch up with Elyse?
3 m

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Elyse and Oliver have a bicycle race. Elyse cycles at a speed of 20 km/h. Oliver cycles at a speed of 22 km/h. If Oliver lets Elyse start 30 min before him, how long will Oliver take to catch up with Elyse?