SOLUTION: your average score for 3 test is 75 what score should you get on the fourth test to increase your average by 5 points

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Question 732424: your average score for 3 test is 75 what score should you get on the fourth test to increase your average by 5 points
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The target average is 75+5=80. The first three tests were as good as being 75% each.

%28%2875%2B75%2B75%29%2Bq%29%2F4=80
What is q?