algebra

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jack bought 3 slices of cheese pizza and 4 slices of mushroom pizza for a total cost of $12.50. grace bought 3 slices of cheese pizza and 2 slices of mushroom pizza for a total cost of $8.50. whay is the cost of one slice of mushroom pizza?

  • algebra -

    let cost of cheese pizza be x
    let cost of mushr. pizza be y

    solve
    3x + 4y = 1250 and
    3x + 2y = 850

    hint: subtract the 2nd from the 1st equation

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