Question

if there are 40% of girl in class. if 200 girl in class. find the totall number of student​

Answer 1

200×40÷100=80

ans:80 student

Answer 2

If there are 40% girls then-

100 - 40 = 60

60% boys

taking boys as 60x and girls as 40x

finding the value of x -

40x = 200

x = 200/40

x = 5

boys = 60x = 60 × 5 = 130

no. of boys = 130

no. of girls = 200

130 + 200 = 330