Answer:
Step-by-step explanation:
To calculate unit price, make the question become x/1
3/2= 1.50 per box
9/4= 2.25 per box
3.57/3= 1.19 per 1 pound bag
4.32/18= 0.24 per oz
7.20/120= 0.06 per fl oz
3.87/1.5= 2.58 for 1 yard
Basically, think of the per as a fraction sign. From there, to get the unit price complete the division to get the fraction over 1.