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5 lb of apples cost $8.20. How much is it for 1 lb?

Answer :

[tex]\begin{gathered} \text{If 5 lb costs \$8.20 then } \\ 1Lb=\frac{8.20}{5Lb}\text{ }=1.64 \\ \text{ 1Lb costs \$}1.64 \end{gathered}[/tex]

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