The proportion of male student and proportion of vegetarian in a school are…

Total student = 800 Student in secondary section = 800*80% = 640 Remaining student equally divided in 11th and 12th class So total 11th class students = 80 Total 12th class student = 80 According to given condition No of male proportion in 12, 11 and secondary section are 0.6, 0.55 and x respectively. Total male student = 800 * 0.475 = 380 12th class male student = 80*0.60 = 48 11th class male student = 80* 0.55 = 44 Secondary section male student = total male student –(11th male + 12th male) = 380 – (48+44) = 288 % of male students in secondary section = secondary section male student/ total male student * 100 = 288/640 *100 = 45%