Answer:
The ratio of boys to girls to 5:7
Let the number of boys be 5x
Let the number of girls be 7x
5x = 30
x = 6
Now just plug in 6 for the x in 7x
and number of girls 7 x 6 = 42
x= -15/8
Step-by-step explanation:
5(2x+3)-2x = 0
10x+15-2x = 0
8x= -15