8/0.72 = 0.09
Per ounce cost $0.09
This gonna help you
Answer:

Step-by-step explanation:











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Answer:
x = 200
Step-by-step explanation:
Given
x -
y = 30 ← substitute y = 15 into the equation
x -
× 15 = 30 , that is
x - 10 = 30 ( add 10 to both sides )
x = 40 ( multiply both sides by 5 to clear the fraction )
x = 200
Answer:
Step-by-step explanation:
cost price x .60 = 80
80/.60 = 133.33 was the cost price