For a party, you order 4 XXL pizzas & 2 boxes of breadsticks from Rock Star Pizza for $86. You return and order 6 XXL pizzas & 4 box

Question

For a party, you order 4 XXL pizzas & 2 boxes of breadsticks from Rock Star Pizza for $86. You return and order 6 XXL pizzas & 4 boxes of breadsticks for $132.50. How much does each item cost?

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Hưng Khoa 2 weeks 2021-07-22T21:51:47+00:00 1 Answers 1 views 0

Answers ( )

    0
    2021-07-22T21:53:11+00:00

    Answer:

    XXL = $19.75

    Box of Breadstick = $3.5

    Step-by-step explanation:

    Given that:

    Let :

    cost per XXL pizza = x

    Cost per box of bread stick = y

    4x + 2y = 86 – – – (1)

    6x + 4y = 132.50 – – – (2)

    From (1): Divide (1) by (2)

    2x + y = 43 – – – (3)

    y = 43 – 2x

    Substitute y = 43 – 2x into (2)

    6x + 4(43 – 2x) = 132.50

    6x + 172 – 8x = 132.50

    -2x + 172 = 132.50

    -2x = 132.50 – 172

    -2x = – 39.50

    x = $19.75

    y = 43 – 2x

    y = 43 – 2(19.75)

    y = $3.5

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