8 pound bag full of apples = $17.50
The unit price is the amount we need to pay per bag.
Now, we need to set up a proportion.
8/17.50 = 1/x
Cross multiply.
8*x = 8x
17.50 * 1 = 17.50
8x = 17.5
Divide
8x/8 = 17.5/8
x= 17.5/8
x= 2.18
2.18 dollars per pound.