l Given scores of 2,75, what should the next score be in order to attain

Enter Scores Comma Separated)

Enter Average


Given 2 scores of 2, 75:

what should be score number 3
in order to attain an average score of 85?

Setup Average Equation:

Average  =  Sum of our 2 numbers + unknown score of x
  Total Numbers

85  =  2 + 75 + x
  3

Cross Multiply

2 + 75 + x = 85 x 3

x + 77 = 255

Subtract 77 from both sides of the equation to isolate x:

x + 77 - 77 = 255 - 77

Final Answer


x = 178