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9 October, 02:48

Each day, Steve walked 1/12 mile more than the previous day. The first day he walked 1/12, the second day he walked 2/12 mile, the third day he walked 3/12 mile. On which day did the sum of his walks total at least 1 complete mule?

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  1. 9 October, 03:10
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    1st day = 1/12

    2nd day = 2/12

    3rd day = 3/12

    4th day = 4/12

    5th day = 5/12

    6th day would be = 6/12

    If it continues in that order, the sum of the walks would total 1 mile when:

    They all add up to 12/12

    Add = 1/12 + 2/12 + 3/12 + 4/12 = 10/12

    That is still not up to 12/12

    So we add up the 5th day also = 10/12 + 5/12 = 15/12 = 1 3/12 miles

    So on the 5th day the sum of his walks total at least 1 completed mile.

    At least 1 means 1 and above. As you can see the answer we got 1 3/12 is already more than 1.
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