Carol H. answered • 10/17/18

Masters' Degree in Mathematics with 35 years of Teaching Experience

**Let x = the price of oranges**

**Let y = the price of grapefruit**

**3x + 6y = 6 Divide both sides by 3**

**x + 2y = 2**

**x = -2y + 2**

**5x + 4y = 6.40**

**5(-2y + 2) + 4y = 6.40**

**-10y + 10 + 4y = 6.40**

**-6y = -3.60**

**y = $.60/ pound**

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**x = -2(.60) + 2 = -1.20 + 2**

**x = $.80/pound**