Question
Betty and Brandon have a bicycle race. Betty cycles at a speed of 15 km/h. Brandon cycles at a speed of 18 km/h. If Brandon lets Betty start 36 min before him, how long will Brandon take to catch up with Betty?
3 m

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Betty and Brandon have a bicycle race. Betty cycles at a speed of 15 km/h. Brandon cycles at a speed of 18 km/h. If Brandon lets Betty start 36 min before him, how long will Brandon take to catch up with Betty?