Answer :

9/15  reduced to 3/5  which is 0.6

Answer: In decimal , it will be expressed as 0.6 .

Step-by-step explanation:

Since we have given that

Total number of students = 15

Number of students names as their favourite class = 9

First we write as a fraction, which is given by

[tex]\frac{9}{15}\\\\=\frac{3}{5}[/tex]

Now , we will change it into decimal form using division, so it will be given by

[tex]0.6[/tex]

Hence, our answer is 0.6.