A store has apples on sale at $3.00 for 2 pounds.

Suppose each of the apples weighs about 5 ounces. Can you buy 24 apples for $9? Explain.

5 ounces * 24 apples = 120 ounces of apples

1 pound = 16 ounces

120 ounces = 7.5 pounds

$3 = 2 pounds

$11.25 = 7.5 pounds.

You cannot but 24 apples for $9 because each apple is five ounces, so you multiply each apple by its weight, and get 120 ounces. Since there is 16 ounces in 1 pound, you have 7.5 pounds of apples. If 2 pounds is three dollars then 7.5 can't be nine.