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If the arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is A. 10 B. 12

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If the arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

A. 10

B. 12

C. 14

D. 16

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1 Answer

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Best answer

Correct answer is D.

Mean \(=\frac{(7+5+13+x+9)}{5}\)

\(10=\frac{(34+x)}{5}\)

50 - 34 = x

x = 16

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