A mixed number is written in a form of [tex]a \frac{b}{c} [/tex], where 'a' is a whole number.
One example of mixed number is [tex]3 \frac{1}{4} [/tex], read as 'three and one quarter'. As decimal fraction, [tex]3 \frac{1}{4} [/tex] equals to 3.25
We are given the value of 3.15 and to change this into a mixed number, first note the whole number, which is 3.
We then change the decimal value 0.15 into a fraction and it is [tex] \frac{15}{100}= \frac{3}{20} [/tex]
Hence, 3.15 = [tex]3 \frac{3}{20} [/tex]
