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If the mean of 16,14,x,23,20 is …

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If the mean of 16,14,x,23,20 is 18, find the value of x

Posted by Patel Astha Prakash Kumar 6 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 11 months ago

Arithmetic Mean = Sum of all observation/Total number of observations

⇒ 18 = (16 + 14 + x + 23 + 20)/5

⇒ 18 = (73 + x)/5

⇒ (x + 73) = 18×5

⇒ x + 73 = 90

⇒ x = 90 - 73

⇒ x = 17

So, the value of x is 17.

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