Study Guide Math Problem... HELP!

Question

A survey about the student government program at a school finds the following result: 

190 students like the program 

135 students dislike the program 

220 students plan on running for student gov. next year. 

 

If a circle graph were made from this data, what would the measure of the central angle be for the group that likes the program? Round your answer to the nearest whole number. 

(I have trouble with these types of problems, can somebody please walk me through the steps of solving so I know what to do on the next question? Thank you!!! :-) ) 

Answer 1

Adding the numbers of likes & dislikes gives 325 students altogether.  The ratio of likes to total is 190/325.  Multiply this fraction by 360^o to get the size of the central angle needed; I got 210^o.