Question
Jane and Pierre have a bicycle race. Jane cycles at a speed of 15 km/h. Pierre cycles at a speed of 25 km/h. If Pierre lets Jane start 40 min before him, how long will Pierre take to catch up with Jane?
3 m

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Jane and Pierre have a bicycle race. Jane cycles at a speed of 15 km/h. Pierre cycles at a speed of 25 km/h. If Pierre lets Jane start 40 min before him, how long will Pierre take to catch up with Jane?