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Anonymous Anonymous
  • 06-02-2017
  • Mathematics
Answered

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? class=

Verified Answer :

christinann062
christinann062 christinann062
  • 06-02-2017

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

Answer Link
BlackBird2098
BlackBird2098 BlackBird2098
  • 06-02-2017

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

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