12 out of 15 as a decimal, percent, and fraction.

0.8, 80%, 8/10 is the correct answer

0.8, 80%, 4/5

To find the decimal divide the numerator by the denominator.

12 divided by 15 equals 0.8

then 0.8 as a percent: move the decimal to the right twice. 80%

also it would be 8/10 simplified to 4/5