Question

I need help with this:(

Answer 1

Answer:

94%

Step-by-step explanation:

The whole thing is about averages. Currently the average an 87%, because 85+91+86 = 262. 262/3 = roughly 87%.

Now if she got another score, that would mean it would now be divided by 4 instead of 3. So the equation is:

(262+x)/4 = 89

           *4     *4

____________

262 + x = 356

-262         -262

____________

          x  = 94