Convert
Unit price
Interest
Tax, discount and Mark Up
Proportions
100

7/10

70%

100

What is the unit price for paper towels, if you buy a 20-pack for $16?

$0.80

100

How much interest do you pay on a $15,000 car loan over 4 years at 7% interest?

4,200

100

What is the cost of a $.99 pack of gum with tax?

$1.07

100

17/100 = 34/x

200

200

2/9

22.2r%

200

What is the unit price of a gallon jug of apple cider if it costs $4.59 for 128 fl oz? (to the nearest thousandth)

.036

200

How much interest do you pay on a $26,000 car loan over 5 years at 3.75% interest?

4,875

200

What is the tax on a $1.99 pack of gum?

0.16

200

3/5 = x/15

9

300

5/8

62.5%

300

Which is a better deal?

5 pounds of apples for $8

or

10 pounds of apples for $15?

10 pounds is 10 cents cheaper per apple

300

Percents to Decimals 2%

0.02

300

What is the tip on a $120 dinner if you only leave 15% because the server never refilled your water?

18

300

2/3 = x/100

66.6r

400

1/8

12.5%

400

Which is a better deal?

A 20 oz tube of toothpaste for $3.29

or

A 16 ounce tube of toothpaste for 2.79?

20 oz

400

How much interest do you earn on a $150,000 investment over 20 years at 8% interest?

699143.57 minus the investment

= $549,143.57

400

What is the price of a sweater if the store buys it for $15 wholesale, and marks it up 150%?

$37.50

400

1/2 = 3/x

6

500

2/3

66.6r%

500

Which is a better deal?

Studying for three hours the night before a test or 

doing your homework every night for 20 minutes?


EVERY NIGHT!

500

What is your monthly car payment if you purchase a car for $22,500 and your loan is over 4 years at 2.7% interest?

24930/48

= 519.38 per month

500

What is the price of an $80 sweater with a 30% discount?

$56

500

12/x = 3/5

20