Percent Proportion
9
Find the percent of change. Round to the nearest whole number.
1.6 hours to 0.95 hours
41% decrease
Find the total cost to the nearest cent:
$89.75 scooter with 7.25% sales tax
$96.26
A shirt is regularly priced at $42. It is on sale for 15% off. What is the sale price of the shirt?
$35.70
Find the simple Interest:
$1,200; 3.9%; 8 months
$31.20
Of the 273 students in a school, 95 volunteered to work the book sale. About what percent of the students volunteered?
About 35%
Three months ago, I could walk 2 miles in 40 minutes. Today i can walk 2 miles in 25 minutes.
Find the percent of change. Round to the nearest whole percent. State whether it's an increase or decrease.
38% decrease
What is the sales tax paid for a $178.90 video game system if the tax rate is 5.75%?
$10.29
A bottle of hand lotion is on sale for $2.25. If this price represents a 50% discount from the original price, what is the original price?
$4.50
Find the Simple Interest:
$290, 12.5%; 8 months
$31.20
Arrange the following from greatest to least value:
20% of 200, 20% of 500, 5% of 1,000
20% of 500 = 100
5% of 1,000 = 50
20% of 200 = 40
Consider a rectangle with dimensions 4 inches by 2 inches. Suppose the side lengths are doubled.
1. Find the percent of change in the perimeter.
2. Find the percent of change in the area.
1. 100% increase
2. 300% increase
A restaurant bill comes to $28.35. Find the total cost if the tax is 6.25% and a 20% tip is left on the amount before tax.
$35.79
Find the price to the nearest cent.
$90.00 skateboard; 33 1/3% off; 8% tax
$64.80
Find the total amount owed:
$75 plus 12.5% interest for 1 month.
$75.78
192 students were surveyed about their favorite kind of TV show. If 25% of the students said music shows were their favorite, how many students said music?
48 Students
Which of the following represents the least percent of change?
A: A coat that was originally $90 is now $72.
B: A puppy weighed 6 oz now weighs 96 oz.
C: A child grew from 54 inches to 60 inches.
D: Savings account increased from $500 to $550.
D.
The Leather Depot buys a coat from a supplier for $90 wholesale and marks up the price by 40%. What is the retail price including 7% sales tax?
$134.82
The Smith's want a new computer. The regular price is $1,049. The store is offering a 20% discount and a sales tax of 5.25% is added after the discount. What is the total cost?
$883.26
The simple interest earned on $2,500 for 18 months is $116.25. What is the interest rate?
3.1%
70% of the 200 students in the middle school cafeteria bought their lunch. Some of these students leave the cafeteria to attend an assembly. Now only 60% of the remaining students bought their lunch. How many students are remaining in the cafeteria?
150 students
Dario is finding the percent of change from $52 to $125. He gets an answer of 58% increase, but he is wrong.
What was Dario's mistake?
He put change over $125, but it should be over $52.
In each pair, the first value is the regular price of an item and the second value is the price with gratuity. Identify the pair that does not belong with the other three. Explain.
A: $30, $34.50
B: $54, $64.80
C: $16, $18.40
D: $90, $103.50
B.
A gift store is having a sale in which all items are discounted 20%. Including tax, Colin paid $21 for a picture frame. If the sales tax is 5%, what was the original price of the picture frame?
$25
Mrs. Wilson deposits $800 in a saving account that earls 3.2% interest annually. At the end of the year, the interest is added to the principal amount. She keeps her money in this account for 3 years without withdrawing any money. Find the total in her account after each year for 3 years.
Year 1: $825.60
Year 2: $852.02
Year 3: $879.28