On his first 4 tests, John received an average score of X points. If on his fifth test, he exceeds his previous average score by 30 points, what is his average score for his first 5 tests?
Choose the correct choice:
A) X +6
B) X +5
C) X +4
D) X
E) X +10
Total of 1st 4 tests= 4X   5th test score = X + 30   Total of all 5 tests = 5X + 30   X +6verage = X +6   X +6nswer : X +6
<result>A</result>
On his first 4 tests, John received an average score of X points. If on his fifth test, he exceeds his previous average score by 30 points, what is his average score for his first 5 tests?