Answer:
1$/2.5lb
Explanation:
This is a fraction equal to 5 pounds / 2 dollars
We want a unit rate where 1 is in the denominator, so we have to divide the top and bottom by 2.
5 pounds / 2
2 dollars / 2
This should progress to
2.5 pounds/a dollar
This means that the unit rate is 2.5 pounds per dollar.