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-   -   How to find the average speed? (https://www.askmehelpdesk.com/showthread.php?t=530152)

  • Nov 29, 2010, 05:44 PM
    rehupo
    How to find the average speed?
    A man rides a bike from melbourne to Koo-wee-rup at a speed of 20km/h. He immediately comes back by train, averaging 60km/h. What is his average speed for the entire jourmey from melbourne to Koo-wee-rup and back??
  • Nov 29, 2010, 11:01 PM
    Unknown008

    Use:



    Let the distance to be x. The total distance becomes 2x.

    The time taken is given by distance divided by speed.

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