Question
Zoe and Simon have a bicycle race. Zoe cycles at a speed of 15 km/h. Simon cycles at a speed of 25 km/h. If Simon lets Zoe start 40 min before him, how long will Simon take to catch up with Zoe?
3 m

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Zoe and Simon have a bicycle race. Zoe cycles at a speed of 15 km/h. Simon cycles at a speed of 25 km/h. If Simon lets Zoe start 40 min before him, how long will Simon take to catch up with Zoe?