Percent of Change
A Manufacturer packages 50 pounds of dry goods with an allowable error of 0.7%. What is the acceptable weight range for a box of dry goods?
49.65 to 50.35 pounds
Candy Plus distributes bulk bags of candy to Sweet Treat Candy Shoppe. Its markup rate is 28%. This equation represents the new price of a bulk bag of candy, y, given an original price, x.
a. y = 0.72x
b. y = 1.28x
c. y = x - 0.72
d. y = x + 1.28
b. y = 1.28x
A group of friends’ brunch bill before tax is $87.50. The sales tax rate is 5%. They want to leave a 15% tip after tax. What is their total brunch bill, including tax and tip?
$105.00
A certain train company charges a service fee of 7% for each train ticket purchased. What is the total price the train company charges for a $320 plane ticket?
$342.40
Ms. Long purchases a new car for $32,000 and finances it with a 6-year simple interest loan at an annual rate of 4.25%. What are Ms. Long’s monthly car payments rounded to the nearest cent?
$557.78
Sarah's Pet Shop is having a sale on deluxe pet beds. The original price for its Ultimate Deluxe Pet Bed is $84.50. The sale price for the bed is $50.70. What is the percent decrease in the price of the bed?
40% Decrease
Last Year's iPhone models are discounted 20%. If an iPhone is on sale for $1480, what is the original price of the computer rounded to the nearest dollar?
$1850
Tiffany buys craft supplies. The craft supplies cost $175.79 before tax. The sales tax rate is 8.25%. How much sales tax does Tiffany pay for the office supplies rounded to the nearest cent?
$14.50
Talia sells music software for a yearly salary of $65,000 plus a 2.65% commission on her total sales. If Talia sells $2.5 million of software during one year, what are Talia’s earnings for that year?
$131, 250
Michael deposits $5,000 in a savings account earning 5.75% simple interest per year. How much interest will Michael earn for a period of 5 years?
$1437.50
For a scale to pass inspection, the scale's reading can vary by at most 0.1% from the actual mass of an object on the scale. A test mass has an exact mass of 250.00 grams. In what range must the scale's reading be for the scale to pass inspection?
249.75 - 250.25 grams
Suzy buys bracelets in bulk to sell in her store. Her cost for each bracelet is $17. She marks up the bracelets 45%. How much does Suzy charge per bracelet?
$24.65
Ella is having her nails done and wants to tip her technician 18%. Write an equation that Ella can use to calculate the tip, y, if her total bill is x dollars.
y = 0.18x
An amount paid to an employee that represents a percent of the employee’s sales is called a ________________.
Commission
Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year.
Marisol receives $8,450 when she closes her savings account. If she made no changes to the account, for how many years did Marisol keep the account open?
12 years
This year, 17,884 people attended a basketball team’s first game, and 17,150 people attended their second game. What is the percent decrease from the first game to the second game in the number of people who attended? Round to the nearest tenth of a percent.
4.1%
The amount by which a price is reduced so that an item will sell is called a ______________.
markdown
Mr. Sharma and his family are having dinner at a local restaurant. He wants to give the server a 15% gratuity, and the restaurant’s sales tax is 6.5%.
Select all the correct terms of the equation.
a. x
b. x + 0.15
c. 0.15x
d. x + 0.65
e. 0.65x
f. 0.065x
c and f
A salesperson earns $8 per hour plus 6% commission on her sales. In a week when she worked 40 hours, her total earnings were $692.
What was the total amount of her sales for the week?
$6,200
An amount of money that is deposited or borrowed that earns or is charged interest is called a _____________.
principal
During week number 1, only 12 students turned in their homework. During week number 2, 17 students turned in their homework.
1. Is this a percent increase or a percent decrease?
2. Calculate the percentage. Round your answer to the nearest tenth of a percent
1. increase
2. 41.6%
The owner of an art supply store buys tubes of magenta oil paint for $10.80 and marks up the cost by 10% to determine the retail price. The tubes of paint do not sell well, so the owner marks down the retail price by 20%.
To the nearest cent, what is the marked-down price of a tube of magenta oil paint?
$9.50
Mr. Sherman and his family are having lunch at a local restaurant. He wants to give the server a 15% gratuity, and the restaurant’s sales tax is 6.5%.
By what percent does the cost of the meal increase with tax and gratuity?
21.5%
A ticket company charges a service fee of 5% of the ticket price for each ticket to a concert. If the ticket price is $19.00, how much will the total cost be including the service fee?
$19.95
What is the formula to use for simple interest?
I = Prt