Question

Which is the better buy, one pound 2 ounce for $1.50 or to pay lb 6 oz for $3.25

Answer 1

Convert the pounds to ounces.

1 pounds = 16 ounces

2 pounds = 32ounces

The unit price for the first buy is

`\begin{gathered} 18\text{ oz= \$1.5} \\ 1\text{ oz=?} \\ \text{cross multiply} \\ \text{price per oz=}(1.5)/(18) \\ \text{price per oz= \$}0.08333333333 \\ \text{price per oz= \$}0.083 \end{gathered}`

The unit price of the second buy is

`\begin{gathered} 38\text{ oz = \$3.25} \\ 1\text{ oz = ?} \\ \text{cross multiply} \\ \text{unit price=}(3.25)/(38)=0.08552631578 \\ \text{unit price}=0.086 \end{gathered}`

The better buy is 1 pound 2 ounces for $1.50.