WorkKeys WorkKeys Applied Mathematics Level 4 and 5 3

Question 1

A manufacturing plant produces 1,200 units in 8 hours with 6 workers. At the same rate, how many units can 9 workers produce in 10 hours?

Accepted Answer

2,250 units

Answer

Rate per worker per hour = 1,200 ÷ (8 × 6) = 1,200 ÷ 48 = 25 units. New output = 25 × 9 × 10 = 2,250 units.

Question 2

A retail manager reviews the following weekly sales data: Mon $3,200 | Tue $2,850 | Wed $4,100 | Thu $3,650 | Fri $5,400 | Sat $6,200. What is the average daily sales, and on how many days did sales exceed the average?

Accepted Answer

Average $4,233 — 3 days above

Answer

Total = 3,200+2,850+4,100+3,650+5,400+6,200 = 25,400. Average = 25,400÷6 ≈ $4,233. Days above: Wed $4,100 (no), Thu $3,650 (no), Fri $5,400 (yes), Sat $6,200 (yes), and Mon/Tue are below. Actually: only Fri and Sat exceed $4,233 — that is 2 days. Let me recount: $5,400 > $4,233 ✓, $6,200 > $4,233 ✓ = 2 days. Correct answer is option B.

Question 3

A warehouse has a rectangular storage area 60 feet long and 40 feet wide. Pallets occupy 25% of the floor space. Each pallet measures 4 feet × 4 feet. How many pallets fit in the storage area?

Accepted Answer

150 pallets

Answer

Total area = 60 × 40 = 2,400 sq ft. Pallet area = 2,400 × 0.25 = 600 sq ft. Each pallet = 4 × 4 = 16 sq ft. Pallets = 600 ÷ 16 = 37.5 → 37 pallets.

Question 4

A nurse needs to mix a 30% saline solution using a 10% saline solution and a 50% saline solution. How many mL of the 10% solution are needed to make 400 mL of the 30% solution?

Accepted Answer

200 mL

Answer

Let x = mL of 10% solution. Then (400−x) = mL of 50% solution. Equation: 0.10x + 0.50(400−x) = 0.30(400). 0.10x + 200 − 0.50x = 120. −0.40x = −80. x = 200 mL.

Question 5

A restaurant orders produce weekly. The produce cost per week for the past 5 weeks was: $1,240 | $980 | $1,380 | $1,150 | $1,470. What is the median weekly cost?

Accepted Answer

$1,240

Answer

Sort the values: $980, $1,150, $1,240, $1,380, $1,470. The median (middle value of 5) is $1,240.

WorkKeys Practice Test

WorkKeys Practice Test

WorkKeys WorkKeys Applied Mathematics Level 4 and 5 3