Question
Betty and Flynn have a bicycle race. Betty cycles at a speed of 16 km/h. Flynn cycles at a speed of 20 km/h. If Flynn lets Betty start 30 min before him, how long will Flynn take to catch up with Betty?
3 m

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Betty and Flynn have a bicycle race. Betty cycles at a speed of 16 km/h. Flynn cycles at a speed of 20 km/h. If Flynn lets Betty start 30 min before him, how long will Flynn take to catch up with Betty?