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13 January, 11:11

Pristine Printing will print business cards for $0.10 each plus a setup charge of $15.00. The printing place offers business cards for $0.15 each with a set up charge of $10.00. What number of business cards cost the same from each printer?

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Answers (1)
  1. 13 January, 12:31
    0
    For 100 cards, the costs will be the same.

    Explanation:

    Define the variable first.

    Let the number of cards be

    x

    For each printer, the calculation process is the same, just using different values.

    At Pristine P. Cost of

    x

    cards is:

    0.10

    *

    x

    +

    15

    =

    0.10

    x

    +

    15

    (10c per card plus set up charge of $15)

    At Printing P : Cost of

    x

    cards is:

    0.15

    *

    x

    +

    10

    =

    0.15

    x

    +

    10

    (15c per card plus set up charge of $10)

    For

    x

    cards, the two costs will be the same:

    0.15

    x

    +

    10

    =

    0.10

    x

    +

    15

    0.15

    x

    -

    0.10

    x

    =

    15

    -

    10

    0.05

    x

    =

    5

    x

    =

    5

    0.05

    x

    =

    100
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