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In 2009, a diabetic express company charged $38.85 for a vial of type A insulin and $30.49 for a vial of type B insulin. If a t...Asked by Erin
In 2009, a diabetic express company charged $39.95 for a vial of type A insulin and $30.49 for a vial of type B insulin. If a total of $1446.64 was collected for 40 vials of insulin, how many vials of each type were sold?
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Answered by
Reiny
number of A vials ---- x
number of B vials ---- 40-x
solve for x:
39.95x + 30.49(20-x) = 1446.64
number of B vials ---- 40-x
solve for x:
39.95x + 30.49(20-x) = 1446.64
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