Answer:
7/16
9/16
Step-by-step explanation:
boys =7+9 total ratio =16
ratio of boys=7/16
ratio of girls=9/16
20
3x + x + 100 = 180 (sum of angles on a straight line)
4x = 180-100
4x=80
divide both sides by 4
x=20
new depth =
4.2/100 X 89 = 3.738 feet
