A student scored 78, 85, 92, and 88 on four math tests. What score does the student need on the fifth test to have an average score of exactly 87?

A 89

B 90

C 91

D 92

✓ Correct Answer: Option D

The desired total score for 5 tests is 87 * 5 = 435. The sum of current scores is 78 + 85 + 92 + 88 = 343. The score needed on the fifth test is 435 - 343 = 92.

💡 Why is D) the correct answer?

The correct answer to the question "A student scored 78, 85, 92, and 88 on four math tests. What score does the student need on the fifth test to have an average score of exactly 87?" is Option D: 92.

The other options — A) 89, B) 90, C) 91 — are incorrect for this GED Exam Prep question. As explained above: The desired total score for 5 tests is 87 * 5 = 435. The sum of current scores is 78 + 85 + 92 + 88 = 343. The score needed on the fifth test is 435 - 343 = 92.

📚 About This GED Exam Prep Practice Question

This 2-level GED Exam Prep question from the Mathematical Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GED Exam Prep practice test or use flashcards for spaced repetition review.

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A student scored 78, 85, 92, and 88 on four math tests. What score does the student need on the fifth test to have an average score of exactly 87?

✓ Correct Answer: Option D

📚 About This GED Exam Prep Practice Question

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