Percent Proportion & Equation Eleanor M. Savko Percent Proportion & Equation Percent of Change Percent of Error 4/16/2017 Tax and Discounts Simple Interest 5 pt 5 pt 5 pt 5 pt 5 pt 10 pt 10 pt 10 pt 10 pt 10 pt 15 pt 15 pt 15 pt 15 pt 15 pt 20 pt 20 pt 20 pt 20 pt 20 pt 25 pt 25 pt 25 pt 25 pt 25 pt

What percent of $90 is $9?

10%

What number is 20% of 35?

7

62 is 90.5% of what number?

68.5

Of the 60 books on a bookshelf, 24 are nonfiction Of the 60 books on a bookshelf, 24 are nonfiction. What percent of the books are nonfiction?

40%

Roman has 2 red pencils in his backpack Roman has 2 red pencils in his backpack. If this is 25% of the total number of pencils, how many pencils are in his backpack?

8 pencils

15 yards to 18 yards

20%

132 days to 125.4 days

5%

Last school year the enrollment of Genoa Middle School was 465 students. This year the enrollment is 525.

12.9%

Tara purchased a DVD player for $150 Tara purchased a DVD player for $150. Six months later, the same DVD player was selling for $120. What was the percent of decrease?

20%

In one year, Braden’s height went from 60 inches to 63 inches In one year, Braden’s height went from 60 inches to 63 inches. What was the percent of increase in Braden’s height?

5%

Estimated: 13.5 lbs Actual: 15.6 lbs

13.5%

Estimate: 75 Actual: 126

40.5%

George estimated that there were 315 students at a basketball game George estimated that there were 315 students at a basketball game. The actual number of students at the game was 350. What was the percent of error of his estimate?

10%

In an experiment, a chemist estimated the amount of liquid in a beaker to be 52 milliliters. The actual amount of liquid in the beaker was 50 milliliters. What was the percent error?

4%

Dane estimated that there were 420 people at a concert with him Dane estimated that there were 420 people at a concert with him. The actual number of people at the concert was 375. What was the percent error of Dane’s estimate?

12%

A haircut costs $20. Sales tax is 4. 75% A haircut costs $20. Sales tax is 4.75%. How much will the haircut cost all together?

$20.95

American Eagle pays $56 for their brown parka American Eagle pays $56 for their brown parka. They add 25% to the price & sell it to the customers. Find the selling price.

$70

A pair of in-line skates is on sale for $98 A pair of in-line skates is on sale for $98. If this price is discounted 9% , what is the final price of the skates?

$89.18

Joe is buying a t-shirt for $12. 99, a pair of shoes for $59 Joe is buying a t-shirt for $12.99, a pair of shoes for $59.95, and sunglasses for $13.50. If he has a coupon for 15% off his total purchase and sales tax is 6%, how much did he pay? Round your answer to the nearest cent.

$77.88

Sara earns a 15% commission on furniture she sells Sara earns a 15% commission on furniture she sells. How much commision would she earn if she sells a dining room set for $850, a chair for $400, and a rug for $75?

$198.75 – commision

How much simple interest will they pay How much simple interest will they pay? Principal - $300 Interest Rate – 4% Term – 6 months

$6

Victoria deposited $2500 into a savings account that pays her simple interest. The interest rate is 3%. How much interest will Victoria earn in 2 years? And what will her balance be?

Interest: $150 Balance: $2650

Tina took out a 6 year loan for $18000 to buy a new car Tina took out a 6 year loan for $18000 to buy a new car. She has to pay 2% simple interest on the loan. How much will Tina have paid in all after the 6 years?

$20,160

Leon borrowed $75 at an interest rate of 12. 5% Leon borrowed $75 at an interest rate of 12.5%. How much will Leon have to pay after 9 months if he makes no payments?

$82.03

Pablo has $4200 to invest for college Pablo has $4200 to invest for college. If Pablo invests $4200 for 3 years and earns $630, what is the simple interest rate?

5%