Total students: 80
We know that:
-business has 14 students
-education has 6 students
-undecided has x students
We need to find out x! So we can add 14 and 6 up and subtract it by 80 to figure out the amount of undecided students there are.
80-(14+6)=60
To find out the percentage, we divide the number of undecided students by the number of total students, and multiply it by 100.
60/80=30/40=0.75=0.75*100=75%
75% of the class is undecided for a major