Question
Cindy and Henry have a bicycle race. Cindy cycles at a speed of 20 km/h. Henry cycles at a speed of 23 km/h. If Henry lets Cindy start 27 min before him, how long will Henry take to catch up with Cindy?
3 m

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Cindy and Henry have a bicycle race. Cindy cycles at a speed of 20 km/h. Henry cycles at a speed of 23 km/h. If Henry lets Cindy start 27 min before him, how long will Henry take to catch up with Cindy?