Transcript You select a card at random. Without replacing the

Applications of Percent
CHAPTER 6 REVIEW (II)
What percent of 54 is 18? If necessary,
round to the nearest tenth of a percent.
33.3%
Emma has already read 8 of 40 books
on her summer reading list. What
percent of the books on her list has she
read already?
20%
16 is 64% of what number? If
necessary, round to the nearest tenth.
25
The Mogul Runners ski club planned
a trip to Park City. Of the total
number of club members, 12 signed
up to go. If this is 75% of the club,
how many members does the ski club
have?
16 Members
Find the percent of decrease from
28 to 20. Round to the nearest
tenth of a percent if necessary.
28.6% Decrease
A toy store’s percent of markup is 35%.
A model train costs the store $200. Find
the markup.
$70
A sporting goods store pays $165 for
a rubber raft. The percent of markup
is 40%. Find the raft’s selling price.
$231
All swimming equipment is on sale
with a 35% discount. A snorkeling set
rings up for $78. Find the regular
price.
$120
At the beginning of 1995, the town
of Canyon Ridge had 1,200 residents.
The rate of population growth after
that was 6% per year. What was the
population at the beginning of 1997?
1996: 1272
1997: 1348.32
1348 Residents
Suppose you roll three 6-sided
number cubes and pick a letter of
the alphabet at random. Find the
probability you roll 3 numbers
greater than 4 and pick one of the
vowels a, e, i, o, or u.
5
702
Jason and Kyle both choose a number
from 1 to 10 at random. What is the
probability that both numbers are
even numbers greater than 7?
1
25
A drawer contains 6 red socks, 8 white
socks, and 4 blue socks. Without
looking, you select a sock at random,
replace it, and select a second sock at
random. What is the probability that
the first sock is blue and the second
sock is red?
2
27
Challenge:
Two urns each contain green balls
and blue balls. Urn I contains 4 green
balls and 6 blue balls, and Urn II
contains 6 green balls and 2 blue
balls. A ball is drawn at random from
each urn. What is the probability that
both balls are the same color?
3
3
9
+
=
10 20 20
Find the probability that 2 students chosen
at random were both born on the weekend.
4
49
A local weather forecaster is accurate
80% of the time when predicting
precipitation for the day. What is the
probability that she will make correct
precipitation predictions 3 days in a row?
51.2%
M
A
T
H
E
M
A
T
I
C
S
You select a card at random. Without
replacing the card, you select a
second card. Find P(M, then H)
1
55
M
A
T
H
E
M
A
T
I
C
You select a card at random.
Without replacing the card, you
select a second card. Find P(T,
then a vowel).
S
4
55
M
A
T
H
E
M
A
T
I
C
You select a card at random.
Without replacing the card, you
select a second card.
Find P(C, then T or S).
S
3
110
The Math Club operates a concession stand during
special school events. One of their best-selling items is
packaged fruit snacks. They buy cases of 24 individual
bags of the snacks. Each case costs $12.00.
a. The percent markup for the snacks is 40%. What is
the selling price of one individual bag of fruit snacks?
b. During the holiday concert, the profit from the sale
of the fruit snacks was $8.60. How many bags of fruit
snacks did they sell?
a. $0.70
b. 43 packages