The sum of 5 odd consecutive numbers is 145

Discussion in 'Calculator Requests' started by math_celebrity, Aug 12, 2017.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    The sum of 5 odd consecutive numbers is 145.

    Let the first odd number be n. We have the other 4 odd numbers denoted as:
    • n + 2
    • n + 4
    • n + 6
    • n + 8
    Add them all together
    n + (n + 2) + (n + 4) + (n + 6) + (n + 8)

    The sum of the 5 odd consecutive numbers equals 145
    n + (n + 2) + (n + 4) + (n + 6) + (n + 8) = 145

    Combine like terms:
    5n + 20 = 145

    Using our equation solver, we get n = 25. Using our other 4 consecutive odd numbers above, we get:
    • 27
    • 29
    • 31
    • 33
    Adding the sum up, we get: 25 + 27 + 29 + 31 + 33 = 145.

    So our 5 odd consecutive number added to get 145 are {25, 27, 29, 31, 33}.

     
    Last edited: Jan 16, 2024

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