Q1 of 47 Page 86

If the average of the values 18, 41, x, 36, 31, 24, 37, 35, 27, 36, is 31. Find the value of x.

GIVEN: Values-18, 41, x, 36, 31, 24, 37, 35, 27, 36

Arithmetic Mean = 31


FORMULA USED: Arithmetic mean =


Number of values = 10


Sum of values = 18 + 41 + x + 36 + 31 + 24 + 37 + 35 + 27 + 36


= 285 + x


Arithmetic mean =


Arithmetic mean = = 31


⇒ 285 + x = 310


⇒ x = 310 – 285


∴ x = 25


CONCLUSION: value of X comes to be 25


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