Answer:
2 [tex]\frac{1}{3}[/tex] planes
Step-by-step explanation:
Set up a ratio.
planes over time.
Because the time is given in minutes. No conversion necessary.
[tex]\frac{planes}{time}[/tex] = [tex]\frac{3.5}{60}[/tex] = [tex]\frac{x}{40}[/tex]
Cross Multiply
60 (x) = 3.5 (40)
60x = 140 Divide by 60, both sides.
x = 2.333 repeating also know as 2 [tex]\frac{1}{3}[/tex].
