## Elementary Algebra

Let x represent the price of one apple. a) The store offers 3 apples for 1.35, so we set up this proportion: $\frac{3}{1}$ = $\frac{1.35}{x}$ To solve this equation, we equate the cross products. 3 $\times$ x = 1 $\times$ 1.35 3x = 1.35 Divide both sides by 3. x = 0.45 The unit price of the first offering is 0.45 dollars. b) The store offers 5 apples for 2.00, so we set up this proportion. $\frac{5}{1}$ = $\frac{2.00}{x}$ To solve this equation, we equate the cross products. 5 $\times$ x = 1 $\times$ 2.00 5x = 2.00 Divide both sides by 5. x = 0.4 The unit price for the second offering is 0.40 dollars.