Math CentralQuandaries & Queries


Question from flo, a student:

michelle walks 4 km to the top of a hill at 3 km/h then immediately walks back down at an average speed of 5 km/h what is her average speed for the 8km walk

Hi Flo,

Michelle walked uphill for 4 km at 3 km/hour. How long did it take her?

Michelle walked downhill for 4 km at 5 km/hour. How long did it take her?

What was her total time? What was her total distance? What was her average speed?


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