Question
Penelope and Zeph have a bicycle race. Penelope cycles at a speed of 18 km/h. Zeph cycles at a speed of 24 km/h. If Zeph lets Penelope start 40 min before him, how long will Zeph take to catch up with Penelope?
3 m

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Penelope and Zeph have a bicycle race. Penelope cycles at a speed of 18 km/h. Zeph cycles at a speed of 24 km/h. If Zeph lets Penelope start 40 min before him, how long will Zeph take to catch up with Penelope?