Question
Jen and Jack have a bicycle race. Jen cycles at a speed of 18 km/h. Jack cycles at a speed of 23 km/h. If Jack lets Jen start 50 min before him, how long will Jack take to catch up with Jen?
3 m

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Jen and Jack have a bicycle race. Jen cycles at a speed of 18 km/h. Jack cycles at a speed of 23 km/h. If Jack lets Jen start 50 min before him, how long will Jack take to catch up with Jen?