Applications of Percent COURSE 2 LESSON 6-7 Applications of Percent A video game costs $34.98. The sales tax rate is 5.5%. Find the total cost. 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 COURSE 2 LESSON 6-7 Applications of Percent Use estimation to calculate a 15% tip for each amount. a. $34.50 Round to the nearest dollar. 34.50 35 Find 10% of the bill. 0.1 • 35 = 3.5. Find 5% of the bill. 5% is of the 10% amount. • 3.5 = 1.75 1 2 Add 10% amount and 5% amount to get 15%. 3.5 + 1.75 = 5.25 A 15% tip for $34.50 is about $5.25. 6-7

Applications of Percent COURSE 2 LESSON 6-7 Applications of Percent (continued) b. $11.84 Round to the nearest dollar. 11.84 12 Find 10% of the bill. 0.1 • 12 = 1.2. Find 5% of the bill. 5% is of the 10% amount. • 1.2 = 0.6 1 2 Add 10% amount and 5% amount to get 15%. 1.20 + 0.6 = 1.8 A 15% tip for $11.84 is about $1.80. 6-7

Applications of Percent COURSE 2 LESSON 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? 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