Algebra

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In 2004, the Diabetic Express charged $27.06 for a vial of Humulin insulin and $34.39 for a vial of Nevolin Velosulin insulin. If a total of $1565.57 was collected for 50 vials of Insulin, how many vials of each type were sold?

  • Algebra -

    Solve this pair of equations for x and y.

    x + y = 50

    27.06 x + 34.39 y = 1565.57

    Try substiting 50-x for y in the second equation.

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