Question
Rachel and Justin have a bicycle race. Rachel cycles at a speed of 16 km/h. Justin cycles at a speed of 20 km/h. If Justin lets Rachel start 45 min before him, how long will Justin take to catch up with Rachel?
3 m

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Rachel and Justin have a bicycle race. Rachel cycles at a speed of 16 km/h. Justin cycles at a speed of 20 km/h. If Justin lets Rachel start 45 min before him, how long will Justin take to catch up with Rachel?