In a class there are 540 students. The ratio of number of boys to girls is 2 : 7 . Find total number of girls in the school.
Answer & explanation
Correct answer: option 2
Boys : Girls : Total
2 : 7 : 9
ATQ,
9R = 540 ( given )
1R = 60
Number of girls = 7R = 7 × 60 = 420