Answer
$18
Work Step by Step
Given, Zach paid $0.90 for a 0.8 oz candy bar.
Step 1.The problem ask for cost per pound.
Step 2. Convert ounces to pounds. Then divide the cost by the number of pounds.
Step 3. Use a unit fraction with pounds (the unit for your answer) in the numerator, and ounces (the unit being changed) in the denominator. Because16 ounces (oz) = 1 pound (lb), the necessary unit fraction is
(1 lb)/(16 oz)
Multiply 0.8 oz times the unit fraction.
0.8 * (1 lb)/(16 oz) = 1/(20 ) lb = 0.05 lb
Step 4. Now to calculate the price per pound, we need to divide the cost $0.90 by 0.05 lb,
So, $0.90 / 0.05 lb = $18
Therefore the price per pound for the strawberries is $18
