In a class of 200 students, 40 percent are girls. 25 percent of the boys and 10 percent of the girls signed up for a tour to Cox’s bazar. What percent of the class signed up for the tour?
Solution
Correct Answer: Option A
as 40% are girls then there are = 200 X 40/10 = 80 girls so, number of boys =200-80=120 boys 25 percent of the boys = 120 X 25/100 = 30 boys 10 percent of the girl =80X 10/100 =8 girls so, total student =(30+8)=38 percent of the class signed up for the tour=38/200 X 100 =19%
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