Question 990613: Kevin's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Kevin
$4.05
per pound, and type B coffee costs
$5.45
per pound. This month, Kevin made
165
pounds of the blend, for a total cost of
$763.45
. How many pounds of type B coffee did he use?
Answer by josgarithmetic(39630)   (Show Source):
You can put this solution on YOUR website! x, quantity of type A coffee;
165-x, quantity of type B coffee;
Equation to Account for Cost of the Blend:
You should be able to handle the arithmetic to solve for x, and then 165-x.
Concentration can be any unit of quantity per whole; it may be dollars per pound, or dollars per kilogram, or even parts per hundred ( meaning, percent ).
A fully worked example, although using percent instead of price, is this video:
two-part mixture percent using just one variable
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