Question

There are 650 students in the graduating class at East Community College. Of these students, 48 % plan to attend graduation and 44 % don't plan to attend the graduation . the rest have not decided. how many students are undecided?

Answer 1

There are 650 students graduating from the class, that is 100% of the students.

The class is divided into three groups based on whether or not they are going to attend graduation:

1) 48% of them are attending graduation.

2) 44% of them are not attending.

3) And the rest have not decided yet. (x%)

The three percentages must add up to 100%, so to determine what percentage of the class has not made a decision yet, you have to add the percentages of those who had made a decision and subtract it from 100:

`\begin{gathered} 48+44+x=100 \\ x=100-(48+44) \\ x=8 \end{gathered}`

So, 8% of the class has not decided whether or not they are going to attend the graduation.

Now to determine what number of students that 8% represents, you have to calculate the 8% of 650.

For this, multiply 650 by 8 and divide the result by 100:

`(650\cdot8)/(100)=52`

52 students are undecided