Question
Pamela and Nick have a bicycle race. Pamela cycles at a speed of 18 km/h. Nick cycles at a speed of 21 km/h. If Nick lets Pamela start 40 min before him, how long will Nick take to catch up with Pamela?
3 m

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Pamela and Nick have a bicycle race. Pamela cycles at a speed of 18 km/h. Nick cycles at a speed of 21 km/h. If Nick lets Pamela start 40 min before him, how long will Nick take to catch up with Pamela?