Page 201 - Math Course 1 (Book 1)

Using Percent Equations

Find the Whole Find the Whole

315 is 42% of what number?
Example A. 750

B. 132.3
84 is 16% of what number? Estimate: 80 is 16% C. 13.33
of 500. D. 150
You know that the part is 84 and the percent is
16%. Let n represent the base. Answer

84 = 0.16n Write 16% as the decimal 0.16

84 0.16n Divide each side by 0.16
0.16 = 0.16
MO. 6 - L6b
525 = n Simplify
84 is 16% of 525. The answer Problem Solving:
Answer is reasonable since it is close Discount and Interest
to the estimate.
Vocabulary A-Z
Your Turn! Let us learn some vocabulary

Find the Part
Find 64% of 48.
Discount
A. 32
B. 75 is the amount by which the regular price of an item
C. 30.72 is reduced.
D. 30

Answer

Find the Percent

8 is what percent of 25? Interest
A. 312% Interest is the amount of money paid or earned for
the use of money.
1
B. 33 %
3
C. 32% For savings account,
interest is earned.
D. 2%

Answer

For a credit card,
interest is paid.

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