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Question

The average of 5 observations x+3,x+5,x+7,x+9,x+11 is 14. Find the value of x.

A
5
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B
6
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C
7
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D
8
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Solution

The correct option is

C

7



Average = x+3+x+5+x+7+x+9+x+115 = 14

5x+35=70

5x=35

x=7

Hence, the value of x is 7.


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