the ratio of boys to girls in a club is 7:4, there are 21 fewer girls than boys , what is the total number of children in the club?

3 answers

let the number of boys be 7x and the number of girls be 4x

7x - 4x = 21
3x = 21
x = 7

so there are 49 boys and 28 girls for a
total of 77
Ggbbb
Good