# Chapter 6 Test Review

Document Sample

```					Chapter 6 Test Review

Percents
Simple Interest
Question 1

• What is 81% of 75.9?
• Part = %
Whole 100
• Is = %
Of   100
• X = 81
75.9   100
X = 61.479
Question 2A

• NO CALCULATOR!!!

Covert 5 to a decimal and
8
Percent!
Question # 2B.

• NO CALCULATOR!!!!
• The new container of kool-aid
contains 30% more juice. If the
old container held 24 fl oz,
ABOUT how many ounces does
it contain now?
Question 3

• If 11% of 300 students walked
to school today, how many
students walked to school
today?

•  X = 11
300 100
• X = 33 students
Question 4
•  A clothing store gave a 12% discount on
a \$400 coat. There was a 7% sales tax.
How much was the coat?
•   X = 12
400    100
• X = \$48 – this is the discount
•  400 – 48 = 352
•   X = 7
352 100 which = \$24.64 in taxes!
ADD THEM UP!!! = \$376.64
Question 5

• Last year, a new car cost \$11,000. If
the price increased by 4%, how
much would the car cost now?
• X =      4
11,000 100
X = \$440, but this is how much the car
increased by!
Answer: 11,000 + 440 = \$11,440
Question 6

• What is the percent of change?
• 72 is decreased to 45
• Amount of Change = %
Original Amount      100
• 27 = X
72     100
• X = 37.5%
Question 7
• Travis scores 13 points in the first
basketball game of the season. The
second basketball game Travis
scores 18 points. What percent of
increase is this?
• 5 = X
13   100
• X = 38.5%
Question 8
• Teresa deposits \$4,000 in an
account that earns 7% simple
interest. How long will it be before
the total amount is \$6,500.
• I = \$2,500 P = \$4,000 r = 7% t = ?
• 2,500 = 4,000 x 7% x t
• Simplify: 4,000 x 7%
• 2,500 = 280t
• t = 9 years
Question 9

If 350 people were surveyed, how
many of them chose pecan pie
as their preference?

• 8% chose pecan pie, so let’s set
up a proportion.
• X = 8
350 100
• X = 28 people
Question 10

• How many degrees of the circle
graph make up the sector for apple
pie?

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 1 posted: 6/19/2013 language: English pages: 13