2012
Mathematics
JAMB
The mean of seven numbers is 96. If an eighth number is added, the mean becomes 112. Find the eighth number.
A.
126
B.
180
C.
216
D.
224
Correct Answer: 224
Explanation
x/7 = 96/1 ==> 672/ + x/8 =112 Therefore x = 224
x/7 = 96/1 ==> 672/ + x/8 =112 Therefore x = 224THIS WEEK's
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