Of a certain high school graduating class, 25 percent of the students continued their formal education, and 50 percent of those who continued their formal education went to four-year colleges. If 100 students in the class went to four-year colleges, how many students were in the graduating class?	Answers.
A) 500  B) 375  C) 240  D) 225  E) 180
30 students went to a 4-year colleges.   This was 50 % of all those who continued their formal education, after completing graduation.   =&gt; 60 students continued their formal education, after completing graduation.   And, this was 25 % of total students in graduaction class.   =&gt; 240 total students in graduation class.   Answer 240
<result>C</result>
Of a certain high school graduating class, 25 percent of the students continued their formal education, and 50 percent of those who continued their formal education went to four-year colleges. If 100 students in the class went to four-year colleges, how many students were in the graduating class?