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2-9 Percents

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**What: Variable (x) Is: equals sign (=) Of: Multiply **

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**Problem 2: Finding a Percent using the Percent Equation**

What percent of 56 is 42?

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What percent of 90 is 54?

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**Problem 3: Finding a Part**

A dress that normally costs $38.50 is on sale for 30% off. What is the sale price of the shirt?

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**Problem 3: Finding a Part**

What is 72% of 150?

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What is 20% of 3?

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**Problem 4: Finding a Base**

125% of what number is 17.5?

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30% of what number is 12.5?

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**Simple Interest Formula**

πΌ=πππ‘ πΌ=πΌππ‘ππππ π‘ π=πππππππππ π=πππ‘π ππ π πππππππ π‘=π‘πππ (ππ π¦ππππ )

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**Problem 5: Using the Simple Interest Formula**

If you invest $50 at a simple interest rate of 3.5% per year for 3 years, how much interest do you earn?

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**Problem 5: Using the Simple Interest Formula**

You deposit $125 in a savings account that earns a simple interest rate of 1.75% per year. You earned a total of $8.75 in interest. For how long was your money in the account?

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