Question
Jean and Bobby have a bicycle race. Jean cycles at a speed of 18 km/h. Bobby cycles at a speed of 24 km/h. If Bobby lets Jean start 40 min before him, how long will Bobby take to catch up with Jean?
3 m

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Jean and Bobby have a bicycle race. Jean cycles at a speed of 18 km/h. Bobby cycles at a speed of 24 km/h. If Bobby lets Jean start 40 min before him, how long will Bobby take to catch up with Jean?