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

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