A survey about the student government program at a school finds the following results.

Question

190 students like the program
135 students think the program is unnecessary
220 students plan on running for student government next year.
If a circle graph were made from the data, what is the measure of the central angle for the group that plans on running for student government next year?

A. 29 degrees
B. 90 degrees
C. 98 degrees
D. 172 degrees***
please check

Answer 1

Unless we know how many students belong to more than one of the groups, there is no way to know how many total students were sampled.

So, any or none of the choices could be correct.

Answer 2

?? I'm a little confused with what you said.. the question shows how many students like the program, think the program is unnecessary, and plan on running for student government.. But the question is asking "what is the measure of the central angle for the group that plans on running for student government next year" When it says what is the measure of the central angle.. it means whats the central angle in a Pie Graph.
And I think the central angle for the Pie Graph would be 172 degrees