Question

Find the average of 2/10,5/10,6/10,7/10,8/10.

Answer 1

Answer:

14/25

Step-by-step explanation:

average= (2/10+5/10+6/10+7/10+8/10)/5

=(28/10)/5

=14/25

Answer 2

The average of $\dfrac{2}{10} ,\dfrac{5}{10},\dfrac{6}{10},\dfrac{7}{10}$ and $\dfrac{8}{10}$ = $\dfrac{14}{25}$

Step-by-step explanation:

The given numbers are:

$\dfrac{2}{10} ,\dfrac{5}{10},\dfrac{6}{10},\dfrac{7}{10}$ and $\dfrac{8}{10}$

Here, number of observations = 5

To find, the average of $\dfrac{2}{10} ,\dfrac{5}{10},\dfrac{6}{10},\dfrac{7}{10}$ and $\dfrac{8}{10}$ = ?

We know that,

Average = $\dfrac{Sum of observations}{Numbers of observations}$

= $\dfrac{1}{5}(\dfrac{2}{10}+\dfrac{5}{10}+\dfrac{6}{10}+\dfrac{7}{10}+\dfrac{8}{10})$

= $\dfrac{1}{5}(\dfrac{2+5+6+7+8}{10})$

= $\dfrac{1}{5}(\dfrac{2+5+6+7+8}{10})$

= $\dfrac{28}{50}$

Didiving numerator and denominator by 2, we get

= $\dfrac{\dfrac{28}{2} }{\dfrac{50}{2}}$

= $\dfrac{14}{25}$

∴ The average of $\dfrac{2}{10} ,\dfrac{5}{10},\dfrac{6}{10},\dfrac{7}{10}$ and $\dfrac{8}{10}$ = $\dfrac{14}{25}$

Thus, the average of $\dfrac{2}{10} ,\dfrac{5}{10},\dfrac{6}{10},\dfrac{7}{10}$ and $\dfrac{8}{10}$ is equal to $\dfrac{14}{25}$.