SOLUTION: Sarah’s mean number of points scored for four video games is 7,500. How many points must she score in the fth video game so that her mean score becomes 7,700?

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Question 1081229: Sarah’s mean number of points scored for four video games is 7,500. How many points must she score in the fth video game so that her mean score becomes 7,700?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28A%2BB%2BC%2BD%29%2F4=7500
A%2BB%2BC%2BD=30000
So then,
%28A%2BB%2BC%2BD%2BE%29%2F5=7700
A%2BB%2BC%2BD%2BE=38500
30000%2BE=38500
Solve for E.