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
Attached Figure / Diagram
A
1
B
2
C
3
D
4
E
5
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
1 + 8 + 15 + 24 + 12 + x/18 + x = 3.5
120 + 10x = 126 + 7x
3x = 6
x = 2
Source: Myschool Past Questions Archive (Record #23906)