Question

The average of 7.5,3.2,11.3,20.5 and x is 10 . Find the value of x

Answer 1

$\color {red}\huge\bold\star\underline\mathcal{Question:-}$

Find the value of x ?

$\bold{\boxed{\huge{\boxed{\orange{\small{\boxed{\huge{\red{\bold{\:Answer}}}}}}}}}}$

we know that ,

$\large\red{\boxed{\sf average \: = \frac{sum \: of \: observation}{total \: observation}}}$

so,

$10 = \frac{(7.5 + 3.2 + 11.3 + 20.5 + x)}{5} \\ \\ 50 = 42.5 + x$

$\large\red{\boxed{\sf </strong><strong>x\</strong><strong>:</strong><strong>=</strong><strong>\</strong><strong>:</strong><strong>7</strong><strong>.</strong><strong>5</strong><strong>}}$

Answer 2

Thanks for asking your question!

Answer:

10 = ( 7.5 + 3.2 + 11.3 + 20.5 + x ) / 5

= 50 = 42.5 + x

= x = 7.5