Question

2.1.AP-1Question Help$Mental Math The ratio of boys to girls at a movie is 4:7. If there are 21 girls, how many boys are atthe movie?

Answer 1

Ratio of boys to girls = 4:7

total ratio = 11

if there are 21 girls

total number of students = (21 x 11)/7 = 33 students

number of boys = 33 -21 girls = 12 boys