SOLUTION: In a school there are twice as many girls as boys.50% of the boys and 20% of the girls do not have lunch in school. What percent of the school enrollment does have lunch in school

Question 325611: In a school there are twice as many girls as boys.50% of the boys and 20% of the girls do not have lunch in school. What percent of the school enrollment does have lunch in school?
A 30% B 40% C 50% D 60% E 70%
Answer by AAfter Search(61) (Show Source): You can put this solution on YOUR website!
Let the number of boys be 100, then number of girls are 200
Boys having lunch is 50 and girls having lunch is 80 percent of 200 = 160.
Hence, total number of students having lunch is (50 + 160) = 210
Percent of students having lunch is [210/(100 + 200)] x 100 = [210/300] x 100 = 70
Hence, Option E is correct.
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