Question
Betty and Bryan have a bicycle race. Betty cycles at a speed of 20 km/h. Bryan cycles at a speed of 23 km/h. If Bryan lets Betty start 36 min before him, how long will Bryan take to catch up with Betty?
3 m

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Betty and Bryan have a bicycle race. Betty cycles at a speed of 20 km/h. Bryan cycles at a speed of 23 km/h. If Bryan lets Betty start 36 min before him, how long will Bryan take to catch up with Betty?