How many times do 15 minutes fit into one hour? 4 times: 4*15=60 mins.
So that means that 4 times per hour 10 flights appear, and in total 4*10=40 planes arrive over one hour!
1.7088061E11 on a calculator that's what I did
Step-by-step explanation:
1) when x= 1/5
y = 1/5 + 1/2
y = 7/10
2) when x= 1/4
y = 1/4 + 1/2
y= 3/4
3) when x= 1/3
y = 1/3 + 1/2
y = 5 /6
