convert the fraction into decimal

$5\frac{1}{10}$

Given:

$5\frac{1}{10}$

To find:
Decimal value 
Solution:

Convert the mixed fraction into an improper fraction.

$=\frac{Quotient\times divisor+reminder}{reminder}$

$$\begin{gathered} =\frac{5\times 10+1}{10} \\ =\frac{51}{10} \end{gathered}$$

Now convert the fraction into a decimal by dividing the value.

$$\begin{gathered} =\frac{51}{10} \\ =5.1 \end{gathered}$$

The decimal is placed at the tenth place as per the dividing value

Thus, the correct option is A