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# What is formula to find Percentage and Average ?

**Given :**

Percentage and Average.

**To do :**

We have to write the formula to find percentage and average

**Solution :**

**Formula to find Percentage :**

% means A number expressed as fraction of 100.

$\displaystyle 10\%\ =\ \frac{10}{100}$

For example, 10% of 50.

$10 \%\ of 50 = \frac{10}{100} \times50 = 5$

**Formula to find Average :**

$Average = \frac{Sum \ of \ observations}{Number \ of \ observations}$

For example, Average of 3 , 5 , 8 , 4

$Average = \frac{3 + 5 + 8 + 4}{4} = \frac{20}{4} = 5$

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