Question

If the average of 40, 10, 25, 20, 35 and X
is 25. then the value of x is​

Answer 1

Answer:

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Answer 2

Answer:

$average = \frac{sum \: of \: observations}{number \: of \: observations} \\ \: \: \: \: \: \: \: \: \: \: \: 25 = \frac{40 + 10 + 25 + 20 + 35 + x}{6} \\ \: \: \: \: \: \: \: \: \: \: \: 25 = \frac{130 + x}{6} \\ \: \: \: \: 25 \times 6 = 130 + x \\ \: \: \: \: \: \: \: \: \: 150 = 130 + x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: x = 150 - 130 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: x = 20$

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