Mathematics, 25.03.2021 20:40 whitty

1.) Lorraine would like to purchase a new pair of boots that cost $80. She has a coupon for 25% off. The following proportion can be used to help her determine the new price: $\frac{25}{100}=\frac{x}{80}$
a) What does the x represent?
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b) Why is the denominator of the first ratio 100?
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c) Solve the proportion: $\frac{25}{100}=\frac{x}{80}$
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d) What is the new price of the boots after the discount?
Answer_

e) Explain why the following proportion could not be used to solve this problem: $\frac{25}{100}=\frac{80}{x}$
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f) To find the final price in one step, you can use the following proportion: $\frac{75}{100}=\frac{x}{80}$
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Where do you suppose the 75 comes from?
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g) Solve the proportion: $\frac{75}{100}=\frac{x}{80}$
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Answers: 2

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1.) Lorraine would like to purchase a new pair of boots that cost $80. She has a coupon for 25% off....