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a student has scores of 58 5 56 75 and 62 25 on his first three tests he needs an average of at least 60 to earn a grade o

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A student has scores of 58.5, 56.75, and 62.25 on his first three tests. He needs an average of at least 60 to earn a grade of D. What is the minimum score that the student needs on the fourth test to ensure a D?

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Answer to a math question A student has scores of 58.5, 56.75, and 62.25 on his first three tests. He needs an average of at least 60 to earn a grade of D. What is the minimum score that the student needs on the fourth test to ensure a D?

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94 Answers

1. Sum the scores of the first three tests:

58.5 + 56.75 + 62.25 = 177.5

2. Set up the inequality for the average of the four tests:

\frac{177.5 + x}{4} \geq 60

3. Multiply both sides by 4 to clear the denominator:

177.5 + x \geq 240

4. Subtract 177.5 from both sides to solve for \( x \):

x \geq 62.5

Answer: The minimum score that the student needs on the fourth test to ensure a D is 62.5.

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