Question

The ratio of boys to girls is 4:5 what is the ratio of boys if the total is 81 students?

Answer 1

4:5

4:9 is boys to total amount

9 x 9= 81

4 x 9 = 36

36 is the answer

Answer 2

Boys to girls 4:5
boys to total: 4:9 (4+5=9)
?:81
well 9*9 equals 81 so 4*9=36
36