Name: ____________________________________
Percents – Practice Exam
1
What number is 40% of 20?
A 0.8
C
B
2
80
D
The school auditorium was
of the auditorium was full?
A 7.8%
C
3
4
5
6
7
8
8
800
7
full. What percent
8
62.5%
9
B 37.5%
D 87.5%
Alfonso earns a 5% commission for each cellular
phone he sells. On Tuesday, he sells a cellular
phone for $180. How much commission does
Alfonso earn on this sale?
A $9
C $36
B $90
D $189
A retail store buys a DVD player from a
manufacturer for $140. The store then marks up
the price by 115%. What is the retail price of the
DVD player?
A $161
C $255
B $301
D $1610
The population of a city is expected to increase
by 7.5% next year. If p represents the current
population, which expression represents the
expected population next year?
A
1.75p
C
p + 0.075
B
1.075p
D
1 + 0.075
10
11
12
Lauren bought a sweater at the sale price of $25.
The original cost of the sweater was $40. What
percent represents the discount that Lauren
received when buying the sweater?
A
15%
C
60%
B
37.5%
D
62.5%
The expression 1.08(0.60p) represents the total
amount Emily paid for a ninja suit originally
priced at p dollars. Which changes to the original
price could have resulted in this expression?
A
The original price was reduced by 40% and
then increased by 8%.
B
The original price was reduced by 40% and
then increased by 108%.
C
The original price was increased by 60% and
then increased by 8%.
D
The original price was increased by 60% and
then increased by 108%.
Sheet # 07-11
Date: ____________
PreAlgebra
13
14
Gianna bought a pair of jeans for $21.95. The
following week, the jeans went on sale for $15.88.
What was the discount rate? Round to the nearest
whole percent.
A
6%
C
38%
B
28%
D
72%
The length of a piece of lumber is measured and
the carpenter accidently reads a length of 60
inches when the real length is 50 inches. What is
the relative error as a percent?
2
%
3
A
2%
C
16
B
10%
D
20%
Julia bought a lamp for 25.49. The next week, the
lamp went on sale for $19.89. What is the
percentage decrease in the price of the lamp?
Round to the nearest whole percent.
A
6%
C
28%
B
22%
D
56%
The cost of Vanessa’s dinner is $15.20. She leaves
a tip that is 15% of the cost of the dinner. What is
the best estimate for the amount of the tip?
A $1.00
C $3.00
B $2.00
D $4.00
A pair of sandals is on sale for 20% off the
original price. If the original price is $16.00, what
is the sale price?
A
$3.20
C
$12.00
B
$12.80
D
$19.20
What is the simple interest earned on $50 at 4.5%
if the money is left in the account for 100 years?
A
$22.50
C
$225.00
B
$45.00
D
$450.00
A pizzeria offers the special described below:
Customers must pay 4% sales tax on all pizzas.
What is the cost, including tax, for 2 large cheese
pizzas?
A
$26.00
C
$19.25
B
$19.50
D
$13.00
Paul raised $640 in a charity
walk last year. This year he
raised 15% more than he
raised last year. How much
money did Paul raise this year?
Show your work.
15
17
Francesca’s service charge at a
beauty salon was $72.60,
before tax. The sales tax rate
was 8%. If she added 20% of
the amount after tax as a tip,
how much did she pay for the
service at the salon?
Ms. Bisal is shopping on-line
for a new microphone for her
on-line videos. The
microphone usually costs
$120 but is on sale for only
$95.
PART A
What was the discount rate to the
nearest percent?
19
Answer $_____________
16
Savoretti is buying a chemistry
explosion kit from an on-line
site for $189.95. He has to pay
sales tax of 8.5% and a $7.95
shipping fee. If Savoretti earns
$20 a week in allowance, how
many weeks will it take him to
purchase the chemistry kit?
Answer _________%
Answer $_____________
18
Nick has a collection of 1,200
music CDs. He considers
1
of
6
Part B: Ms. Bisal found a coupon code
on retailmenot.com for 30% off the
ORIGINAL price. She can either buy
the microphone for the sale price or use
the coupon on the original price. What
should she do? Justify your response.
his collection rock music. Of
the rock music CDs, 20% are
by solo artists. Of the solo
artists,
2
are by female artists.
5
Exactly how many of Nick’s
CDs are by female solo rock
artists?
Part C: Ms. Bisal purchases the
microphone using the best deal. How
much will she pay after a tax of 8.75%
is applied?
Answer ________ weeks
Answer _____________ CDs
Answer $____________