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

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