Addison High School’s senior class has 300 boys and 240 girls. If 30% of the boys did not attend the college then 70% of the total class attended college, what percentage of the girls class did not attend college?  Choose the most appropriate option
A) 70 B) 45 C) 50 D) 46 E) 30

Rationale: "% of boy attending the college = 100 - 30 = 70 % number of boys attending the college : 0.70 * 300 = 210 total people = 300 + 240 = 540 total number of students attending the college : 0.70 * 540 = 378 number of girls attending the college = 378 - 210 = 168 number of girls not attending the college = 240 - 168 = 72 % of girls not attending = 72 / 240 = 30 % . e is the correct answer"
Answer: E