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15Apply Percents to Real Life Situations Unit
107-B4-1 107-B4-2
Sales Tax 3. Find the total cost including sales tax. total cost 5%
1. Find the sales tax and the total cost. Example 105% tax
Price : $62
Example Tax : 5% 100%
price
Price: $50
Tax: 6%
a. Price: $45 b. Price: $94 a. Price: $38 b. Price: $84
Tax: 7% Tax: 4% Tax: 6% Tax: 7.5%
c. Price: $114 d. Price: $152 c. Price: $79 d. Price: $26
Tax: 6.5% Tax: 5.75% Tax: 5% Tax: 4.5%
e. Price: $70 f. Price: $250 e. Price: $124 f. Price: $204
Tax: 4.2% Tax: 8.12% Tax: 8.5% Tax: 3.5%
2. Ann wants to buy a bag that costs $30. She must also pay 8% for the sales tax. 4. Ryan bought a tennis racket. The price of the tennis racket was $48 and he also
What is the total cost of the bag? paid 6.5% for the sales tax. What was the total cost of the tennis racket?
Objective Learn how to find the total cost Objective Learn how to find the total cost
including sales tax. including sales tax.
Textbook Reference Activity 2 Textbook Reference Activity 2
107-B5-1 107-B5-2
Simple Interest 2. Solve each word problem.
1. Find the simple interest. Example
Example Jessica put $40 in the bank at 6% yearly interest. How much money does she
Simple interest is a fixed percent of the principal, which is paid yearly. Simple have after 3 years?
interest can be calculated in the following way.
(interest) (principal) (interest rate) (time)
principal: $50
interest rate: 7%
time: 3 years
a. b. a. Thomas put $270 in the bank at 5% yearly interest. How much money does
principal: $140 principal: $200 Thomas have after 1 year?
interest rate: 5% interest rate: 6%
time: 2 years time: 5 years b. Ann put money in the bank at 4% yearly interest. Ann received $64 as interest
in 4 years. How much was the principal?
c. d.
principal: $260 principal: $350 c. Kate put $50 in the bank. Kate has $54.50 after 2 years. What was the yearly
interest rate: 3% interest rate: 5% interest?
time: 4 years time: 10 years
e. f.
principal: $530 principal: $750
interest rate: 5.5% interest rate: 7.5%
time: 2 years time: 3 years
Objective Learn how to find the simple Objective Learn how to solve word
interest. problems related to simple
interest.
Textbook Reference Activity 3
Textbook Reference Activity 3
6A Unit 15 225
107-B4-1 107-B4-2
Sales Tax 3. Find the total cost including sales tax. total cost 5%
1. Find the sales tax and the total cost. Example 105% tax
Price : $62
Example Tax : 5% 100%
price
Price: $50
Tax: 6%
a. Price: $45 b. Price: $94 a. Price: $38 b. Price: $84
Tax: 7% Tax: 4% Tax: 6% Tax: 7.5%
c. Price: $114 d. Price: $152 c. Price: $79 d. Price: $26
Tax: 6.5% Tax: 5.75% Tax: 5% Tax: 4.5%
e. Price: $70 f. Price: $250 e. Price: $124 f. Price: $204
Tax: 4.2% Tax: 8.12% Tax: 8.5% Tax: 3.5%
2. Ann wants to buy a bag that costs $30. She must also pay 8% for the sales tax. 4. Ryan bought a tennis racket. The price of the tennis racket was $48 and he also
What is the total cost of the bag? paid 6.5% for the sales tax. What was the total cost of the tennis racket?
Objective Learn how to find the total cost Objective Learn how to find the total cost
including sales tax. including sales tax.
Textbook Reference Activity 2 Textbook Reference Activity 2
107-B5-1 107-B5-2
Simple Interest 2. Solve each word problem.
1. Find the simple interest. Example
Example Jessica put $40 in the bank at 6% yearly interest. How much money does she
Simple interest is a fixed percent of the principal, which is paid yearly. Simple have after 3 years?
interest can be calculated in the following way.
(interest) (principal) (interest rate) (time)
principal: $50
interest rate: 7%
time: 3 years
a. b. a. Thomas put $270 in the bank at 5% yearly interest. How much money does
principal: $140 principal: $200 Thomas have after 1 year?
interest rate: 5% interest rate: 6%
time: 2 years time: 5 years b. Ann put money in the bank at 4% yearly interest. Ann received $64 as interest
in 4 years. How much was the principal?
c. d.
principal: $260 principal: $350 c. Kate put $50 in the bank. Kate has $54.50 after 2 years. What was the yearly
interest rate: 3% interest rate: 5% interest?
time: 4 years time: 10 years
e. f.
principal: $530 principal: $750
interest rate: 5.5% interest rate: 7.5%
time: 2 years time: 3 years
Objective Learn how to find the simple Objective Learn how to solve word
interest. problems related to simple
interest.
Textbook Reference Activity 3
Textbook Reference Activity 3
6A Unit 15 225
