Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test
Practice Question
Robert has $50 to spend on his utility bills each month. The basic monthly charge for water and sewer is $23.77. Electricity costs $0.1116 for each kilowatt hour used. The inequality 0.1116x + 23.77 ? 50 represents Robert's monthly utility budget. To the nearest kilowatt hour, what is the maximum number of kilowatt hours of electricity that Robert can Use without going over his monthly budget amount?
Answer Choices
- A: 661
- B: 235
- C: 448
- D: 424
Correct Answer: B
Rationale: Solve the inequality 0.1116x + 23.77 ? 50. Subtract 23.77: 0.1116x ? 26.23. Divide by 0.1116: x ? 26.23 / 0.1116 ? 235.02. To the nearest kilowatt hour, x = 235. Thus, the correct answer is 235.