There’s this app called Socratic that you can use. It’s like this one but it’s a little different
Answer: 22 i think
Step-by-step explanation:
add all sides together
Speed = distance / time
since they are moving in opposite direction, the time is the sum of the two times = 2 1/2 + 4 = 6 1/2 = 13/2
speed = 585/(13/2) = 90 miles per hour.