Marissa is researching information martial art students she found that 7 out of 12martial artist practice every day there are 144 martial arts students at a school predict how many students practice every day what is the sample size

So we want to know how many students out of 144 practice martial arts every day if we know that 7/12 practice every day. So lets multiply the numerator and the denumerator with 12. We will get (12*7) / (12*12) = 84/144. And we got our answer: 84 out of 144 students practice every day.