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19 February, 19:13

On a brisk walk, a person burns about 331 Cal/h. If the brisk walk were done at 3.0 mi/h, how far would a person have to walk

to burn off 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.)

mi?

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  1. 19 February, 20:24
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    32mi

    Explanation:

    If 1lb contains 3,500 Cal

    It means the number of hours required to burn 3500cal would be;

    3500/331 = 10.57hours

    But a brisk walk is 3.0 mi/h,

    It means a distance of 3.0 * 10.57 mi would be covered = 31.71 miles

    32miles{ approximated to the nearest whole}

    Note Distance = speed * time
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