1. Objective- To solve problems involving percent.
Five types of problems - Simply translate what
you read!
1) Ratio Conversions
6 out of 20 is what percent? = n%
= n%
30% = n

2. What percent of is ?
n %
3.5 =
0.84
n %
3.5 =
0.84
n % = 0.24
n = 24 %

3. 2) Percent of a Number
112% of is what number?
1.12
650 = n
728 = n
7 % of what number is 31.5?
0.07 n =
31.5
0.07 n =
31.5
n = 450

4. 3) Percent Change
From $75 to $83

5. The tax on a $44 sweater was $3.63.
Find the tax rate.

6. 4) Discount/ Mark-up - New Price?
$ 85 discounted 20%
( )(85)
(85)
0.80 (85)
$ 68
$ 68

7. 5) Discount/ Mark-up - Original Price?
After a 30% mark-up, a shirt was $33.80.
What was the original price?
Let x = original price
x x =
1.30x =
x = 26
$ 26.00