Discounts/Markups
A hockey stick originally cost $89. How much will Alex save if he has a coupon for 20% off?
$17.80
What is the formula for percent of change?
(new - original) / original
I=prt
A computer that originally cost $729 was put on clearance for 25% off. What is the selling price of the computer?
$546.75
Daniel is buying a new stereo for $1,350. If the sales tax is 6.2%, how much will he pay in total?
$1,433.70
Georgia's final average in 6th grade was 86. In 7th grade, her final average was 81. Find the percent of change in her final average from 6th to 7th grade.
5.8% decrease
Romeo opened a credit card with a 18.5% simple interest rate to purchase a $879 cellphone. If he pays off the phone in 18 months, how much will he have paid in total?
$1,122.92
In 2000, the population of a town was 18,500 people. In 2020, the population was 29,000. Find the percent of change from 2000 to 2020. Round to the nearest tenth.
56.8% increase
Homeboy deposited $6,000 into a savings account with a simple interest rate of 2.8%. If his account has earned $2,908 in interest, and there have been no other activity to his account, how many years ago did he open the account?
17.3 years
Lexie earns a base salary of $400 per week, then 3% commission on sales. How much will she make in one week if her sales totaled $6,278?
$588.34
I took out a 5-year loan from the bank for $24,000 to pay for college. At the end of the loan, she had paid a total of $29,400. Find the interest rate on the loan.
4.5%