The table shows the scores of a group of studen... - WAEC Mathematics 1997 Question
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
correct option: b
1 + 8 + 15 + 24 + 12 + x/18 + x = 3.5
120 + 10x = 126 + 7x
3x = 6
x = 2
120 + 10x = 126 + 7x
3x = 6
x = 2
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