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What will Sally's score need to be to give her an average of 91?
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What will Sally's score need to be to give her an average of 91?

What will Sally's score need to be to give her an average of 91?-example-1
User Fabian Damken
by
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2 Answers

3 votes
I was just guessing numbers but I got 89 and add 89, 72, 95, and 108 and then divide the total by 4 and you'll get 91
User Darren
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she would need a score of 89 to give her an average of 91.

108 + 72 + 95 + x / 4 = 91
add
275 + x / 4 = 91
multiply each side by 4
275 + x = 364
subtract 275 from each side
x = 89
User Jserras
by
6.0k points
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