Question
Yoko and Ivan have a bicycle race. Yoko cycles at a speed of 15 km/h. Ivan cycles at a speed of 24 km/h. If Ivan lets Yoko start 36 min before him, how long will Ivan take to catch up with Yoko?
3 m

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Yoko and Ivan have a bicycle race. Yoko cycles at a speed of 15 km/h. Ivan cycles at a speed of 24 km/h. If Ivan lets Yoko start 36 min before him, how long will Ivan take to catch up with Yoko?