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Sphinxa [80]
3 years ago
5

A student scores 73 out of 100 on a test. If the maximum score on the next test is also 100​ points, what score does the student

need to maintain at least an average of 79 ​?
Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0
Because the student scored 73/100 on the first test, their current average is 73%.

To calculate the avergae with the next test score, you add both percentages the student gets together and then divide by 2.

79 = (73 + x) / 2

Multiply by 2 on both sides

158 = 73 + x

Subtract 73 on both sides

x = 85

So the student needs to get at least an 85/100 on the next test to maintain a 79 average.
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Given that :

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Plugging in our values

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