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12 July, 05:15

David is designing a t-shirt for the choir pop show. The cost of printing is $400 plus $7.50 per shirt. What is the average total cost per shirt if 85 shirts are sold? Round to the nearest cent.

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  1. 12 July, 07:02
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    average cost ≈ $12.21 (nearest cent)

    Step-by-step explanation:

    The cost of printing the shirt is $400 plus $7.50 per shirt. The cost for producing the shirt requires a flat rate of $ 400 plus an additional $7.50 for each shirt.

    Let

    x = number of shirt

    total cost = 400 + 7.50 (x)

    The number of shirt sold = 85

    The average cost per shirt can be calculated as follows when he sold 85 shirts.

    Average cost = total cost/number of shirt

    total cost = 400 + 7.50 (x)

    total cost = 400 + 7.50 (85)

    total cost = 400 + 637.50

    total cost = $1037.5

    number of shirt = 85

    average cost per shirt = 1037.5/85

    average cost = 12.205882353

    average cost ≈ $12.21 (nearest cent)
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