Understanding Discounts: How to Calculate Original Prices Like a Pro

• A. $30
• B. $50
• C. $40
• D. $45

Answer: (C)

Understanding Discounts: How to Calculate Original Prices Like a Pro

Let’s talk discounts! If there’s one thing that can make anyone’s day brighter, it’s scoring a good deal on something you want—like that dapper shirt you’ve been eyeing. But what happens when you see that awesome price slashed down after a discount? How do you figure out what the original price was?

What’s the Scenario?

Imagine you’re out shopping, and you spot a shirt that is $30 after a 25% discount. It leaves you thinking, "What was the original price?" You know it’s not just a shot in the dark; we can actually nail this down with some math!

Breaking It Down: The Math Behind Discounts

To solve this, let’s grasp how discounts function. The 25% off means that you’re left with 75% of the original price (100% - 25% = 75%). Let’s denote the original price as P.

Now, using this understanding, you can set up a simple equation:

[ 0.75 \times P = 30 ]

This step might seem daunting if math isn’t your best friend, but “don’t worry; we got this!”

Isolation of P

To find P, we can divide both sides of our equation by 0.75:

[ P = \frac{30}{0.75} ]

When you crunch those numbers using a calculator, or with a little mental math (no pressure!), you’ll discover:

[ P = 40 ]

So, the original price of that fabulous shirt was $40. [ Buzzer sound: correct answer! ] Now, you faced some options earlier: A. $30, B. $50, C. $40, D. $45. Clearly, C is your match!

Why Learn This?

So, you're probably wondering: "Why should I care about calculating discounts?" Well, the ability to understand and work with percentages is crucial, especially as you prepare for your Ontario Mathematics Proficiency Test. This topic isn’t just confined to shopping; it applies to everything from budgeting to financial literacy. Plus, showing off your math skills might even earn you some cool points with your friends!

A Quick Recap

• Look at the Discount: When you see a 25% off, recognize you’re paying 75% of the original.

• Set Up Your Equation: Use the formula to represent the relationship between the original and sale price.

• Solve for the Original Price: Rearranging the equation leads you to a clearer understanding.

Now, you’re not just another shopper; you’re a savvy consumer who knows how to calculate discounts and find those sweet deals. It’s like having a secret weapon in your back pocket or, better yet, a handy math cheat code!

So the next time you're faced with a discount, you’ll be ready to do some quick calculations and dazzle your friends with your newfound math prowess. And who knows? With these skills, you might just be the go-to for all things discounts among your peers. Happy calculating!