page 29 – 30 !
Percent Word Problems
1. There were 60 cars in the lot and 15 were!
red. What percent of the cars were red?!
You have 15 red cars
out of a total of 60 cars
Percent =
2. There are 12 men in the 80 member choir.
What percent of the choir is male?
You have 12 men
out of a total of 80 members
number of red cars
total number of cars
15
=
!
60
Percent =
number ofmales
total number of members
12
=
80
decimal = .25
decimal = .15
Percent = 25%
of the 60 cars were red cars
Percent = 15%
of the 80 members are male
.20 • 50 = 10
4. In a class of 60 students, 51 own a cell!
phone. What percent of the students in the !
class do not own an cell phone?!
5. 20 of the 25 students in a class are right
handed. What percent of the 25
students are left handed.
You a total of 60 students
51 own a cell phone so
9 DO NOT own a cell phone.
You a total of 25 students
20 ARE right handed
5 ARE LEFT handed.
number who DO NOT
own a cell phone.
Percent =
total number of students
9
!
=
60
number who are
left handed.
Percent =
total number of students
5
=
20
decimal = .15
decimal = .25
Percent = 15%
of the 60 students in the class
DO NOT own a cell phone
Percent = 25%
of the 25 students in the class
are LEFThanded.
Math 30 !
Chapter 1 pages 29 and 30!
© 2016 Eitel
Page 30
A total number of some quantity is given, TA percentage of the total is also given
The phrase 25% OF the total is used to indicate a multiplication problem.
Multiply the percent times the total to get the number of items you want to find.
How do I find the numbers of cars that ARE NOT RED.
Lets say there is a total of 50 cars.
Some of the cars are RED. The rest ARE NOT RED. You are told that 20% of the 50 total cars ARE
RED. This means the product of .20 and 50 will be the number of RED cars. .20 • 50 = 10. 10 of the
50 cars ARE RED.
20% of the 50 total cars ARE RED. This means 80% of the 50 ARE NOT RED. This means the
product of .80 and 50 will be the number of cars that ARE NOT red. .80 • 50 = 40. 10 of the 50 cars
ARE RED.
11. 25% of the 64 cars in the school parking!
lot are owned by students. How many of !
these cars are owned by students?!
25% of the 64 total cars
ARE OWNED by students.
The product of .25 and 64 will
be the number of cars that
ARE OWNED by students.
13. The college has 40 teachers. 40% of
them are on vacation. How many
teachers are not on vacation?
40% of the 40 teachers
ARE ON vaction. This means
that 60% of the 40 teachers
ARE NOT ON vaction
The product of .60 and 40
will be the number teachers
that ARE NOT ON vaction.
.25 • 64 = 16
!
16 of the 64 total cars
ARE OWNED by students.
.60 • 40 = 24
24 of the 40 teachers
ARE NOT ON vaction
Math 30 !
Chapter 1 pages 29 and 30!
© 2016 Eitel