Mathematics

The table shows the scores of a group of students in a test. If the…

The table shows the scores of a group of students in a test. If the average score is 3.5, find the value of x
  • A.
    1
  • B.
    2
  • C.
    3
  • D.
    4
  • E.
    5
Correct Answer: Option B
Explanation
1 + 8 + 15 + 24 + 12 + x/18 + x

= 3.5

120 + 10x = 126 + 7x
3x = 6
x = 2