Math Review

Luca is planning to pay the restaurant bill for his coworkers. The bill was $193.75. A 4% tax was then added by the waiter. If Luca wants to leave a 16% tip on the total amount including the tax, how much should Luca pay?

$201.50

$217.50

$224.75

$233.74

• A

• B

• C

• D

After 3 years, a $1,500 investment is worth $1,680. What is the interest rate on the investment?

0.04 percent

2.0 percent

4.0 percent

37.3 percent

• A

• B

• C

• D

A store purchases an item wholesale for $60 and marks it up by 70 percent. If there is a 7 percent tax on the item, how much will the item cost?

$42.00

$96.00

$102.00

$109.14

• A

• B

• C

• D

Paul needs to find 310% of 72. Which expression should he use?

(0.310)(72)

(3.10)(72)

(31.0)(72)

(310)(72)

• A

• B

• C

• D

A frozen dinner at a grocery store is purchased for $2.20 wholesale and is marked up by 40 percent. A customer wants to buy four frozen dinners. How much will the customer pay, including paying 9 percent sales tax? Round your answer to the nearest cent.

$8.80

$10.07

$13.43

$14.39

• A

• B

• C

• D

The office manager of First Tech Support borrowed $25,000 to purchase new computers for employees. The bank charges 6 percent interest for 4 years. How much interest will the company pay in all?

$1,200

$1,500

$4,800

$6,000

• A

• B

• C

• D

Which of the purchases would be the least expensive?

• A

• B

• C

• D

Jack works at a sporting goods store and makes a commission of 20 percent. His sales for each week are shown below. How much did Jack make in total in commission during all four weeks?

Week: 1 2 3 4

Sales: $3000 $2500 $3500 $4000

• $200

• $260

• $2000

• $2600

A frame is marked down by 22 percent from an original price of $14.50. What is the new price?

$3.19

$11.31

$13.72

$14.28

• A

• B

• C

• D

Antoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00.

Tess says, “It is easy to find 10% of 46 by moving the decimal point one place to the left to get $4.60. Do that twice. Then add the two amounts to get $4.60 + $4.60 = $9.20 for the 15% gratuity.”

How should Antoine respond to Tess’s method?

• “Tess, the best way to find 15% of $46.00 is to multiply 1/15 by $46.00 to get $3.07, which is the 15% gratuity.”

• “Tess, you found 20% of the number because you added 10% and 10%. You need to add 10% to 1/2 of 10%. Add $4.60 and $2.30 to get $6.90, which is the 15% gratuity.”

• “Tess, the best way to find 15% of $46.00 is to multiply 0.015 and 46.00 to get $0.69, which is the 15% gratuity.”

• “Tess, you should use a table with 5% segments to find the gratuity. Each 5% segment has a value of $9.20, so that is the 15% gratuity.”