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• Paul Nicholsen

# Pulverizing Percentages!

Hey there, SAT Math Wizards! 📊🌟

Today, we're going to dig deep into one of the most essential math concepts that frequently appears on the SAT: percentages. Don't worry; I'll explain this in a way that makes it crystal clear. We'll also tackle three multiple-choice exercises with detailed explanations. By the end of this, you'll be a percentage pro!

Percentage Basics: Exercise 1

A. 20

B. 40

C. 60

D. 100

Explanation: When we want to find a percentage of a number, we simply multiply the number by that percentage as a decimal. So, to find 25% of 80, we multiply 80 by 0.25 (25% as a decimal), which equals 20. So, the correct answer is A, 20.

Percentage Discounts: Exercise 2

Imagine you want to buy a shirt that originally costs \$40, but it's on sale for 20% off. What is the sale price?

A. \$8

B. \$16

C. \$32

D. \$48

Explanation: To calculate the sale price after a percentage discount, you subtract the discount amount from the original price. In this case, the discount is 20% of \$40, which is \$8. So, the sale price is \$40 - \$8, which equals C, \$32.

Percentage Increase: Exercise 3

Now, let's say your savings have grown from \$200 to \$240. What is the percentage increase?

A. 10%

B. 15%

C. 20%

D. 25%

Explanation: To find the percentage increase, you need to calculate the difference between the new amount and the original amount. In this case, it's \$240 - \$200, which equals \$40. Then, divide this increase (\$40) by the original amount (\$200) and multiply by 100 to express it as a percentage. This calculation gives you C, 20%.

Understanding percentages is a fundamental math skill that comes in handy on the SAT and in real life. You'll encounter percentage questions in various forms, from discounts and increases to more complex problem-solving scenarios.

So, keep practicing your percentage calculations, and you'll be well-prepared for any math problem involving percentages on the SAT. You've got this!

Happy math-solving, SAT superstars! 📚🧮🌟