Question
Jade and Oscar have a bicycle race. Jade cycles at a speed of 15 km/h. Oscar cycles at a speed of 20 km/h. If Oscar lets Jade start 40 min before him, how long will Oscar take to catch up with Jade?
3 m

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Jade and Oscar have a bicycle race. Jade cycles at a speed of 15 km/h. Oscar cycles at a speed of 20 km/h. If Oscar lets Jade start 40 min before him, how long will Oscar take to catch up with Jade?