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#### Lesson 3: Percentages in Real Life

### Sales tax

#### Try This!

#### Curious about the sales tax where you live?

### Discounts, markdowns, and sales

#### Try This!

### Calculating tips

#### Try This!

### Assessment

/en/percents/calculating-percentages/content/

Depending on where you live, you might pay a **sales** **tax **on the things you buy. A sales tax is an extra charge added to the price of an item. The amount you pay in tax is almost always a **percentage **of that price.

Suppose you buy a $50 coffeemaker in an area where the sales tax is 8%. When you check out, 8% of $50 would be added to your total price. How much would you pay total?

Click through the slideshow to learn how to calculate sales tax.

Find the total cost of each item after sales tax. Be sure to round your answer to the nearest cent. For example, $64.24305 would become $64.24.

You buy a pair of sunglasses for $49.00. The sales tax is 7%.

You need to purchase $326.00 worth of vinyl siding. The sales tax is 4%.

You buy $32.19 worth of groceries. The sales tax is 5.7%.

You can use this list of State and Local Sales Tax Rates from the Tax Foundation to look up the sales tax rate where you live.

Have you ever bought something on sale marked down by **twenty** **percent**? Or used a coupon to take **30% off**? If so, you've used a** discount**. A discount is usually a **percentage **of the original price. The percentage is **subtracted** from the original price to determine the sale price.

Let's say a shirt costs $8, but it's been marked down by 50%. When you check out, 50% of $8 will be subtracted from the original price. How much would the shirt cost after the discount?

Click through the slideshow to learn how to calculate discounts.

Find the final cost for each item.

You find a pair of shoes on sale for 35% off. They originally cost $90.00. What will they cost on sale?

You spend $42.00 on groceries, but you have a coupon for 10% off. What is the final price of your bill?

A bookstore is going out of business, so all books are 60% off. How much would you spend on a book that originally cost $12.95?

If you've eaten at a restaurant, you've probably left a **tip** for your server. A **tip** is a small amount of money that you add to your bill when someone gives you service. The amount of a tip is usually a **percentage** of the total cost. For example, you might leave a** fifteen percent **tip at a restaurant for average service.

Let's say you eat at a restaurant with some friends. The bill comes to $12.04, and you'd like to leave a 15% tip. This means you'd like to leave 15% of $12.04. How much money should you leave total?

Click through the slideshow to learn how to calculate tips.

Find the final price for each item, including the tip.

You have a pizza delivered to your house. It costs $19. You want to leave the delivery driver a 15% tip. What's the total?

You eat out at a restaurant with some friends. The bill comes to $47.50. If you leave a 20% tip, what is the total cost of your bill?

Your cab fare from home to the airport is $35. You'd like to give your driver an 18% tip. What's the total?

Want even more practice? Try out a short assessment to test your skills by clicking the link below:

/en/percents/converting-percentages-decimals-and-fractions/content/