Carol H. answered • 02/07/18

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**Let x = the number of large binders**

**Let y = the number of small binders**

**x + y = 80 x = 80 - y**

**8.49x + 5.99y = 544.20 Multiply both sides of this equation by 100.**

**849x + 599y = 54420**

**849(80 - y) + 599y = 54420**

**67920 - 849y + 599y = 54420**

**-250y = -13500**

**y = 54 small binders**

**x = 80 - 54**

**x = 26 large binders**