SOLUTION: Chemical A, which costs $5.30 per milliliter, is to be combined with 40mL of Chemical B, which costs $8.30 per milliliter. How much of Chemical A should be used, in order for the

Question 324851: Chemical A, which costs $5.30 per milliliter, is to be combined with 40mL of Chemical B, which costs $8.30 per milliliter. How much of Chemical A should be used, in order for the overall cost to be $6.90 per milliliter?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let X be the amount of A used,

.
.
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Use 35mL of Chemical A.
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