Some fifth graders took a survey asking students whether they felt a lot of stress, a little stress, or no stress. The survey showed that 1/5 felt a lot of stress. 1/2 felt a little stress, and 3/10 felt no stress. There were 12 students that felt no stress. How many students took the survey?
well First let's have all the fractions have the same denominator
Lots of stress - 2/10
little stress - 5/10
no stress - 3/10
meaning 3/10 = 12 students so that means 1/10 = 4students and then that means 10/10 = 40 students took the survey