Question
Marion and Vaidev have a bicycle race. Marion cycles at a speed of 16 km/h. Vaidev cycles at a speed of 18 km/h. If Vaidev lets Marion start 30 min before him, how long will Vaidev take to catch up with Marion?
3 m

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Marion and Vaidev have a bicycle race. Marion cycles at a speed of 16 km/h. Vaidev cycles at a speed of 18 km/h. If Vaidev lets Marion start 30 min before him, how long will Vaidev take to catch up with Marion?