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

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