Tax, tip, and discount
Finding the whole
Percent change
Interest and commission
Teacher trivia
100
An employee has to pay an income tax of 28% on any money they earn.  If their annual salary is $48,000, how much income tax must they pay?

$13,440

100

A bracelet is 30% off.  If the sale price of the bracelet is $14, what was the original cost of the bracelet?

$20

100

Last year, the cost of a ticket to a local amusement park was $20.  This year, the cost is $22.  What is the percent change in the price?

10%

100

In order to borrow $5,000 for a year, Mrs. Linn has to pay 8% interest.  How much interest will Mrs. Linn have to pay?

$400

100

This is Ms. Kitchen's _______ year teaching at OMS

7th

200
The tax rate in a certain city is 9%.  If Daniel buys some new earbuds that cost $120, what is the total cost of the earbuds including tax?

$130.80

200

Logan tells Cory that 40% of all students will be at the Valentine's Day dance.  If 248 students will be at the dance, how many total students are there at OMS?

620

200

What is the percent change from 12 to 17.4  What is the percent change?

17.4

200

A real estate broker earns 3% commission on any homes he sells.  How much more commission does he earn on a house that costs $600,000 compared to a house that costs $300,000?

$9,000

200

Before Ms. Hayes was assistant principal, what subject did she teach?

Gym

300
Paulina wants to buy two new cheer uniforms that cost $45 each.  She has a coupon for 20% off.  How much will Paulina pay in total?

$72

300

The number of people who watched the Oscars is expected to increase this year by 15%.  If experts believe that there will be 34.04 million viewers this year, how many viewers tuned in last year?

29.6 million

300
A student has 8 Gigabytes left on their flash drive, so they decide to delete some old files.  The clear up an additional 3 Gigabytes of space.  What was the percent change in the amount of storage on their flash drive?

37.5% increase

300

Kairi invests $200 into an account that pays an annual interest rate of 7%.  What is the total amount of money that Kairi will have after a year?

$214

300

Which teacher once taught in Nepal?

Mr. McCrary

400

A family goes to a restaurant.  Their subtotal comes to $87.  Tax in the city where they live is 8.5%.  They also want to leave a tip of 18% on the cost of their meal plus tax.  What is the total cost of their meal?

$111.39

400

The tax on an item is 8.5%.  If the total cost of the item including tax is $19.53, what was the cost of the item before tax?

$18.00

400

How much is the discount on a pair of jeans that used to cost $58 but now cost $37.70?

35%

400

An account grows from $800 to $920 after one year.  What percent interest was the account earning each year?

15%

400

What state is Ms. Tsai originally from?

Michigan

500

Shalom has a coupon for 25% off of her purchase at the store.  If c represents the cost of her purchase before the discount, which of the following expressions correctly represent the total cost of her purchase including the discount?

A.  0.75c
B.  0.25c
C.  c - 0.25c
D.  c(1 - 0.25)
E.  c + 0.25c

A, C, D

500

Marilyn knows that an instrument case has been marked down by 45% and is on sale for only $14.30.  Which of the following equations could be used to find the original cost of the case?

A.  0.45x = 14.30
B.  0.55x = 14.30
C.  0.45(14.30) = x
D.  14.30 - 0.45(14.30) = x

B

500

Which of the following expressions could represent the effect of a 12% increase on a population of size p?  Select all that apply.

A.  0.12p

B.  1.12p
C.  0.88p
D.  p + 0.12p
E.  p(1+0.12)

B, D, E

500

A worker at Verizon looks at his paycheck and sees that he has made $780 for the week.  This includes his weekly salary of $480.  If his phone sales for the week was $3,750, what percent commission does he earn?

8%

500

Ms. Kitchen once walked across an entire country.  Which country was it?

Spain

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