Deanna has 5-cent stamps and 10-cent stamps. If she has 100 total stamps, what is the value of the s

Discussion in 'Calculator Requests' started by math_celebrity, Jan 6, 2023.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    Deanna has 5-cent stamps and 10-cent stamps. If she has 100 total stamps, what is the value of the stamps? Call the 5-cent stamps n.

    Value of 5-cent stamps
    0.05n

    Number of 10 cent stamps is:
    100 - n
    Value is 0.10(100 - n) = 10 - 0.10n

    Add them both:
    10 - 0.10n + 0.05n
    10 - 0.05n
     

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