Question
Tina and Ahmad have a bicycle race. Tina cycles at a speed of 15 km/h. Ahmad cycles at a speed of 21 km/h. If Ahmad lets Tina start 48 min before him, how long will Ahmad take to catch up with Tina?
3 m

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Tina and Ahmad have a bicycle race. Tina cycles at a speed of 15 km/h. Ahmad cycles at a speed of 21 km/h. If Ahmad lets Tina start 48 min before him, how long will Ahmad take to catch up with Tina?