Name: 
 

Quiz 6.5-6.7



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

A bike with an original price of $90 is discounted 40%. What is the sale price?
a.
$36
c.
$126
b.
$50
d.
$54
 

 2. 

A gold chain with an original price of $120 is on sale for $96. What is the percent of the discount?
a.
125%
c.
24%
b.
80%
d.
20%
 

 3. 

A remote control airplane with an original price of $85 is on sale for $76.50. What is the percent of the discount?
a.
8.5%
c.
10%
b.
111%
d.
90%
 
 
Find the annual interest rate.
 

 4. 

I = $40, P = $500, t = 16 months
a.
8%
c.
5%
b.
6%
d.
0.06%
 
 
Find the amount of time.
 

 5. 

I = $10, P = $100, r = 2%
a.
3 years
c.
5 years
b.
0.1 year
d.
4 years
 

 6. 

A savings account earns 4% annual simple interest. The principal is $1100. What is the balance after 5 years?
a.
$23,100
c.
$1320
b.
$220
d.
$22,000
 

Numeric Response
 

 1. 

A dog shelter had 20 puppies last month. This month, 31 puppies are at the shelter. What is the percent of change?

 

 2. 

A pair of boots with an original price of $34.70 is discounted 10%. What is the sale price?

 

 3. 

A television with an original price of $120 is on sale for $90. What is the percent of the discount?

 

 4. 

After 4 years at 3% simple interest per year, your savings account earns $90.00. What is the principal?

 

 5. 

A principal of $19,500 is invested at 6% annual simple interest for 9 years. How much interest is earned?

 

Short Answer
 
 
Identify the percent of change as an increase or decrease. Then find the percent of change. Round to the nearest tenth of a percent, if necessary.
 

 1. 

15 grams to 30 grams
 

 2. 

50 feet to 9 feet
 



 
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