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WorkKeys Workplace Applied Mathematics Questions and Answers 3 Flashcards

6 cards from real WorkKeys practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 WorkKeys Workplace Applied Mathematics Questions and Answers 3 flashcards as text

  1. A power plant produces 12,500 MWh/day at 80% efficiency. How many MWh are delivered to the grid?

    Answer: 10,000 MWh

    12,500 × 0.80 = 10,000 MWh.

  2. A company saves $2,400/year switching to LED lighting. Installation cost was $9,600. In how many years does it break even?

    Answer: 4 years

    $9,600 ÷ $2,400 = 4 years.

  3. A project requires 480 labor hours. 8 workers each work 8-hour days. How many days will it take?

    Answer: 8 days

    Daily hours: 8 × 8 = 64 hr/day. Days: 480 ÷ 64 = 7.5 → 8 days (rounded up).

  4. Inventory purchases: 100 units@$5.00, 200 units@$6.00, 300 units@$7.00. What is the weighted average cost per unit?

    Answer: $6.33

    Total cost: $3,800. Total units: 600. Average: $3,800 ÷ 600 = $6.33.

  5. A water plant uses 2.5 lbs of chlorine per 1,000 gallons treated. It treats 850,000 gallons/day. How many lbs of chlorine are needed?

    Answer: 2,125 lbs

    850 units × 2.5 = 2,125 lbs.

  6. A kitchen serves 280 customers: 60% order the special ($14.95), 40% order regular ($11.50 avg). What is total meal revenue?

    Answer: $3,799.60

    Special: 168 × $14.95 = $2,511.60. Regular: 112 × $11.50 = $1,288.00. Total: $3,799.60.