A video game costs $34.98. The sales tax rate is 5.5%.

Find the total cost.

COURSE 2 LESSON 6-7COURSE 2 LESSON 6-7

Find the sales tax. Round to the nearest cent.0.055 • 34.98 = 1.92

Add the purchase price to the sales tax.34.98 + 1.92 = 36.90

The total cost is $36.90.

6-7

Applications of Percent

Use estimation to calculate a 15% tip for each amount.

COURSE 2 LESSON 6-7COURSE 2 LESSON 6-7

A 15% tip for $34.50 is about $5.25.

a. $34.50

Round to the nearest dollar.34.50 35

Find 5% of the bill. 5% is of the 10% amount. • 3.5 = 1.7512

12

Add 10% amount and 5% amount to get 15%.3.5 + 1.75 = 5.25

Find 10% of the bill.0.1 • 35 = 3.5.

6-7

Applications of Percent

(continued)

COURSE 2 LESSON 6-7COURSE 2 LESSON 6-7

A 15% tip for $11.84 is about $1.80.

b. $11.84

Round to the nearest dollar.11.84 12

Find 5% of the bill. 5% is of the 10% amount. • 1.2 = 0.612

12

Add 10% amount and 5% amount to get 15%.1.20 + 0.6 = 1.8

Find 10% of the bill.0.1 • 12 = 1.2.

6-7

Applications of Percent

The bill for dinner is $22.58. The sales tax is 7.5%, and

you want to leave a tip of about 20%. How much will you pay?

COURSE 2 LESSON 6-7COURSE 2 LESSON 6-7

Step 1   Find the sales tax.0.075 • 22.58 = 1.6935

The sales tax is $1.69.Step 2   Find the tip.

22.58 23 Round to the nearest dollar.0.2 • 23 = 4.6 Find 20% of the bill.

The tip is $4.60

Step 3   Add the tax and tip to the bill to find the total.total = food bill + tax + tip      = 22.58 + 1.69 + 4.60      = 28.87

You will pay $28.87 for dinner.

6-7

Applications of Percent