Percent change as an expression
Replace p with the number in the expression for the new price.
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A price p is decreased by 10%, so the new price is 0.9p. What is the new price when p = 60?
Answer: 54
A price p is decreased by 50%, so the new price is 0.5p. What is the new price when p = 100?
Answer: 50
A price p is increased by 20%, so the new price is 1.2p. What is the new price when p = 60?
Answer: 72
Tip: Replace p with the number in the expression for the new price.
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