Convert
The Percent Eqn
Percent ↑ or ↓
Discounts, Mark-ups, and Original Price
Simple Interest
100

Convert .5 to a fraction in simplest terms and a percent.

1/2 and 50%

100

What is 50% of 30?

15

100

10 feet to 25 feet (remember to state whether its an increase or decrease!)

150% increase

100

An item was originally priced at $80. You have a 10% off coupon. What is the sale price?

$72

100

P = $500; r = 3%; t = 3 years. Find the interest.

I = $45

200

Convert 25% to a fraction and a decimal.

1/4 and .25

200

18 is what percent of 20?

90%

200

8 to 24 (remember to state whether its an increase or decrease!)

200% increase

200

You find a wreathe on sale during Hobby Lobby's after Christmas 90% off sale. The wreathe was originally $65. What is the sale price?

$6.50

200

You deposit $1000 into a savings account with a 2.5% interest rate. What is the BALANCE after 4 years?

$1100

300

Convert 1.4 to a fraction and percent

1  2/5 and 140%

300

39 is 52% of what number?

75

300

300 miles to 210 miles (remember to state whether its an increase or decrease!)

30% decrease

300
An item was marked $60 but is now $45. Find the percent of discount.

25%

300

You deposit $350 in an account. The account earns $17.50 in interest over 2.5 years. What is the interest rate?

2%

400

Convert 2/3 to a decimal and a percent

.666... and 66.6...% (must have bar notation to be correct)

400

90 is 180% of what number?

50

400

75 to 25 (remember to state whether its an increase or decrease!)

66.6...% (must have bar notation) decrease

400

You brag to your spouse about the tinsel you got at the 90% off Hobby Lobby after Christmas sale. You state that you purchased it for ONLY $30! Incredulous, he asks how much it was originally. What is the original price?

$300

400

An account earns $360 in interest. The amount deposited was $800 with a 15% interest rate. Find the amount of time the account was open.

3 years

500

Convert 1 to a fraction and a percent.

1 and 100%

500

What is 2% of 9000?

180

500

5/4 to 3/8 (remember to state whether its an increase or decrease!)

70% decrease

500

An item rings up at the register as a sale price $40 and was 25% off. What was the original price?

$53.33

500

You deposit $2000 into an account. You gained $160 in interest over 8 months. Find the interest rate.

12%