Question

6. The mean of 5, 10, x, 15, 15, 15 is 15, then value of x is​

Answer 1

Answer:

$\frac{5 + 10 + x + 15 + 15 + 15}{6} = 15 \\ \frac{15 + 15 + 15 + 15 + x}{6} = 15 \\ 60 + x = 90 \\ x = 30$

Answer 2

Answer:

The value of x is 30.

Step-by-step explanation:

The arithmetic mean is a measure of the central tendency of a finite set of numbers.

Given,

the finite set of numbers is 5,10,x,15,15,15

the arithmetic mean of the given set of numbers is 15.

The mean is formulated as -

$Mean = \frac{Sum of all the terms}{Total number of terms}$

∴ $15 = \frac{5 + 10+x+15+15+15}{6}$

⇒ $15 \times 6 = 60+x$

⇒ $90-60=x$

⇒ $x=30$.

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