Where you take a word problem and turn it into an equation
The first package is 4 oz (1/4lb) at 79cents = 19.75 cents/oz
Second Package is 8 oz at 1.59 = 19.875 cents / oz
So the first package is cheaper per ounce.
You can use proportions in all of these as I explained in another one of your questions. I'll post the answers if you still want them.
Answer:
division
Step-by-step explanation:
2x/2=8/2=x=4
x=4