Question
Ivory and Bryan have a bicycle race. Ivory cycles at a speed of 15 km/h. Bryan cycles at a speed of 18 km/h. If Bryan lets Ivory start 36 min before him, how long will Bryan take to catch up with Ivory?
3 m

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Ivory and Bryan have a bicycle race. Ivory cycles at a speed of 15 km/h. Bryan cycles at a speed of 18 km/h. If Bryan lets Ivory start 36 min before him, how long will Bryan take to catch up with Ivory?