Sarah’s house has 5 stories. If the first story has 10 windows, and the following stories have one l

Discussion in 'Calculator Requests' started by math_celebrity, Jul 21, 2017.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    Sarah’s house has 5 stories. If the first story has 10 windows, and the following stories have one less window than the story below it, how many windows does Sarah’s house have?

    1. Floor 1 has 10 windows
    2. Floor 2 has 9 windows
    3. Floor 3 has 8 windows
    4. Floor 4 has 7 windows
    5. Floor 5 has 6 windows
    10 + 9 + 8 + 7 + 6 = 40 windows
     
    math_celebrity, Jul 21, 2017
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