10 free WorkKeys practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
WorkKeys Practice Test 15Tutor mode
Question 1 of 10
Applied Math
Your plant must replace an air compressor and will keep the new one for 5 years. Model X costs $18,400 and draws 6,200 watts. Model Y costs $21,900 and draws 3,500 watts. Either model will run 2,000 hours per year, and electricity costs $0.14 per kilowatt-hour. Over the 5 years, how much less will the lower-cost model cost in total, counting the purchase price and electricity?