Page 483 - Basic College Mathematics with Early Integers

460 C HAPTE R 6 I PERCENT

PRACTICE 1 Example 1 Translate to a proportion.
Translate to a proportion. 12% of what number is 47?
15% of what number is 55? t
T T T
Solution:
base amount
It appears It is the part
percent
after the compared to
word of the whole

amount : 47 12 ; percent
=
base : b 100
Work Practice 1

PRACTICE 2 Example 2 Translate to a proportion.
Translate to a proportion. 101 is what percent of 200?
35 is what percent of 70? t
T T T
Solution:
amount base
It is the It appears
percent
part compared after the
to the whole word of

amount : 101 p ; percent
=
base : 200 100
Work Practice 2

PRACTICE 3 Example 3 Translate to a proportion.
Translate to a proportion.What What number is 90% of 45?
number is 25% of 68? t
T T T
Solution:
amount base
It is the It appears
percent
part compared after the
to the whole word of

amount : a 90 ; percent
=
base : 45 100
Work Practice 3

PRACTICE 4 Example 4 Translate to a proportion.
Translate to a proportion. 238 is 40% of what number?
520 is 65% of what number? t
T T T
Solution: amount percent base
Answers Copyright 2012 Pearson Education, Inc.
55 15 35 p 238 40
1. = 2. =
b 100 70 100 b = 100
a 25 520 65
3. = 4. =
68 100 b 100 Work Practice 4