In 2009 a diabetic express company charged 3885 for a vial


In 2009, a diabetic express company charged $38.85 for a vial of type a insulin and $30.34 for a vial of type B insulin. If a total of $1721.24 was collected for 50 vials of insulin, how many vials of each type were sold? 

The number of files of type a insulin sold were __ and the number of vials of type B insulin sold were ___. 

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Algebra: In 2009 a diabetic express company charged 3885 for a vial
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