Question on: JAMB Mathematics - 2022
Find x if the mean of 2x, 4x, 2x - 13 and 6x is 4.
A
1.5
B
2.0
C
1.0
D
0.5
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Correct Option: B
Mean (4) = \(\frac{2x + 4x + 2x - 13 + 6x}{4}\)
16 = 14x - 13
16 + 13 = 14x
x = 29/14 or 2.07
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