# Chapter 7 - Section 7.1 - Systems of Linear Equations in Two Variables - Exercise Set - Page 819: 60

$6$ pound of raisins and $4$ pound of granola

#### Work Step by Step

Step 1. Assume we need $x$ pounds of raisins and $y$ pounds of granola; the total weight is $x+y=10$, or $y=10-x$ Step 2. The total cost is $2x+3.25y=2.5(10)$ Step 3. Using substitution, we have $2x+3.25(10-x)=25$ or $2x+32.5-3.25x=25$ and $1.25x=7.5$, thus $x=6$ and $y=4$ pounds.

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