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Byju's Answer
Standard VIII
Mathematics
Applications (Word Problem)
The mean of ...
Question
The mean of
8
,
7
,
9
,
10
,
12
,
x
and
14
is
12
, then find the value of
x
.
A
21
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B
22
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C
23
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D
24
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Solution
The correct option is
C
24
Given mean is
12
.
Therefore, mean
=
8
+
7
+
9
+
10
+
12
+
x
+
14
7
⇒
12
=
60
+
x
7
⇒
84
=
60
+
x
⇒
x
=
24
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