Answer:
90 to 30
90/30
Step-by-step explanation:
control group
$2467.50
987 = ( 1 - 0.6 )x
987 = 0.4x
x = 2467.5
d≈3.05
d= C/π
d=9.58/π
d≈3.04941
it goes into 4, <u>6 times</u>
÷
Hope this helps