Workkeys Applied Math

You are working as a cashier at a computer supply store. School is starting soon, so the state is hosting a sales-tax-free weekend today and tomorrow. A customer buys one flash drive for $14.90 and a power strip for $12.50. If the customer hands you two $20 bills, how much will you give him back in change?

• $27.50

• $25.10

• $12.60

• $27.40

• $67.40

Answer explanation

Add the prices of the two items, and then subtract that amount from $40 to find the amount of change: $14.90 + $12.50 = $27.40, and $40.00 − $27.40 = 12.60

Tags

CCSS.6.EE.B.7

You work as a salesperson for a company that manufactures high-end gym equipment. You just closed a sale with someone looking to remodel a gym; her order of treadmills, ellipticals, exercise bikes, and other equipment totaled $33,000. You earn a commission of 20% on every sale you make. If you put 35% of your earnings on this particular sale into a savings account, what is the amount invested?

• $2,310

• $4,290

• $6,600

• $8,910

• $9,240

Answer explanation

First, the amount you earn in commission on this sale is 0.20($33,000) = $6,600. Of this amount, you invest 35%, which is equal to 0.35($6,600) = $2,310.

Tags

CCSS.6.EE.B.6

A new obstacle course is home to several new types of challenging obstacles. One such obstacle is traversing a 15-stair staircase. To make it more challenging, the stairs are not uniformly spaced. Rather, the vertical space between consecutive stairs for the first 10 stairs is 1 1/3 feet and the vertical space for the last 5 stairs is 1 3/4 feet. What is the total vertical distance traveled ascending and descending the entire 15-stair staircase?

• 10 feet 7 inches

• 13 feet 4 inches

• 21 feet 1 inch

• 21 feet 2 inches

• 44 feet 2 inches

Answer explanation

Tags

CCSS.HSF.BF.A.2

At the end of the day, a local bakery sold 83 cakes and had to throw out 7 cakes due to baking errors. Each cake cost the bakery $6.25 to make. The bakery, in turn, sold each cake for $12.75. What was the total profit earned by the bakery today?

• $406.50

• $452.00

• $495.75

• $539.50

• $585.00

Answer explanation

The amount of money the bakery made from selling 83 cakes was 83($12.75). From this, we must subtract two quantities: the total cost of making the 7 cakes that were thrown out and the total cost of making the 83 cakes that the bakery sold. The former quantity is 7($6.25), and the latter is 83($6.25). So, the total profit from the day is 83($12.75) − [7($6.25) + 83($6.25)] = $1,058.25 − $562.50 = $495.75.

Tags

CCSS.5.NBT.B.5

CCSS.5.NBT.B.7

An attic exhaust fan is designed to start when its sensors detect a temperature of 35°C. All of your thermometers provide readings using the Fahrenheit scale (°F). What is the equivalent Fahrenheit reading for the point at which the exhaust fan turns on?

• 95°F

• 86°F

• 68.8°F

• 31°F

• 1.66°F

Answer explanation

Use the formula °F = (9/5 × °C) + 32 to convert degrees Celsius into degrees Fahrenheit: °F = (9/5 × 35°) + 32 = 63° + 32 = 95°F.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1