2x + 2(x-90) = 3480
2x + 2x - 180 = 3480
4x = 3660
x = 915 mph Plane 1 westbound
915-90 = 825 mph plane 2 eastbound
Answer:
6%per year
Step-by-step explanation:
210000/300000=.7
it increased by 30%
30/5=6%per year
Answer: 6.31 miles per day
18.93 divided by 3
