A student has scores of 73, 84, 91 and 78. What score must the student earn on the fifth test in order to have an average score of 85? A. 85 B. 88 C. 97 D. 99

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asked Dec 17, 2022 198k views

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Clau St · Answer 1 · 2022-12-18T05:11:17+0000

Answer:

Step-by-step explanation:

The average of an
amount of values is equal to the sum of all the values divided by
. Thus, for any five scores to have an average score of 85, the sum of the scores must be
$85\cdot 5=425$

Therefore, we have the following equation:

$73+84+91+78+m=425,\\m=\boxed{99}$

A student has scores of 73, 84, 91 and 78. What score must the student earn on the fifth test in order to have an average score of 85? A. 85 B. 88 C. 97 D. 99

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