Percent Change
A backpack's price increases from $40 to $50. What is the percent increase?
25% increase.
A package is expected to weigh 40 kg, with an allowable percent error of 5%. What is the acceptable weight range?
2 kg. Range: 38–42 kg.
A store buys a water bottle for $20 and marks it up by 25%. What is the new price?
Mark up = $5 dollars
New Price = $25.00
A salesperson earns a 5% commission on $600 in sales. How much commission does the salesperson earn?
$30.00 Commission
You deposit $500 into an account that earns 4% simple interest per year. How much interest will you earn after one year?
$20 in interest
A store reduces its inventory from 150 jackets to 132 jackets. What is the percent decrease?
12% decrease.
A survey expects 800 people to respond favorably. If the percent error is 3%, find the least and greatest number of favorable responses.
24 people
Range 776 - 824
A pet supply store marks up dog food by 28%. Write an equation for the new price "y" when the original price is "x"
y = 1.28x
A salesperson earns a yearly salary of $40,000 plus a 3% commission on $200,000 in sales. What are the total yearly earnings?
$46,000.00
You deposit $2,000 into an account that earns 3.5% simple interest per year. How much interest will you earn after four (4) years?
$280 in interest
An Extreme skateboard's original price is $84.50. Its sale price is $50.70. What is the percent decrease?
40% decrease.
A manufacturer packages coffee in 50 kg cartons with an allowable error of 0.7%. What is the acceptable weight range?
0.35kg
Range: 49.65–50.35 kg.
A shirt originally costs $64 and is marked down by 15%. What is the sale price?
Sale Price = $54.40
Talia earns a yearly salary of $65,000 plus a 2.65% commission on total sales. If she sells $2.5 million worth of software, what are her total yearly earnings?
$131,250.00
Marisol deposits $5,000 into a savings account earning 5.75% simple interest per year. How much interest will she earn after five (5) years?
$1,437.50 in interest
A school's enrollment decreases from 275 students to 242 students. What is the percent decrease? Round to the nearest whole percent.
12% decrease
A research company expects 6,000 people to respond favorably to a survey. If the percent error is 2.5%, find the minimum and maximum numbers of favorable responses.
Minimum: 5,850; maximum: 6,150.
A computer is on sale for $1,480 after a 20% markdown. What was its original price? Round to the nearest dollar.
$1,850.00
$1,110A travel agent earns a 6% commission. If the agent sells $18,500 worth of vacation packages, how much commission is earned?
$1,110 Commission
Ms. Ling finances a $32,000 car with a six-year simple-interest loan at 4.25% annual interest. Assuming equal monthly payments and no additional fees, what is her monthly payment, rounded to the nearest cent?
$557.78
A town's population increases from 24,000 to 27,600 in one year. The following year, it decreases to 25,920. Find the percent increase during the first year and the percent decrease during the second year. Round to the nearest tenth of a percent.
First year: 15% increase.
Second year: approximately 6.1% decrease.
A concert organizer expects 1,250 people to attend. The prediction has an allowable percent error of 4.8%. Find the error amount, the minimum attendance, and the maximum attendance.
60 people. Minimum: 1,190; maximum: 1,310.
A store buys a speaker for $80, marks it up by 35%, and then discounts the marked-up price by 20%. What is the final sale price? Is it still above the original cost, and if so, by what percent?
Sale Price = $86.40
This is $6.40 ABOVE original cost so this is an 8% increase.
A salesperson earns a base salary of $52,000 plus a 4.5% commission on sales. If total yearly earnings are $88,000, how much did the salesperson sell?
$800,000.00
You deposit $6,200 into an account earning 4.5% simple interest per year. You make no additional deposits or withdrawals, and the account grows to $7,595. How many years was the money in the account?
5 years