Are you the same kid I just helped? I typed the answer to this and more on your other account's question.
https://brainly.com/question/14106977
Here's the answer anyway:
As your teacher seemed to have written, [tex]\frac{15}{100}[/tex] CAN be simplified. Let's see if 5 can go into both of them...
[tex]15[/tex]÷[tex]5[/tex][tex]=3[/tex]
[tex]100[/tex]÷[tex]5=20[/tex]
So now, it's [tex]\frac{3}{20}[/tex].
Since this fraction is virtually the same fraction as before, the decimal and percentage doesn't change. They stay 0.15 and 15%.
