26. Two trains are traveling on perpendicular tracks. Train A is traveling east at the rate of 40 mi/h and
train B is traveling north at the rate of 30 mi/h. At noon, train A is at the intersection and train B is
10 mi north of the intersection
a.How far apart are the two trains at 12:30 PM?
b. At what rate, in miles per hour, are the two trains separating at 12:30 PM?
c. At what time of day are the two trains at an equal distance from the intersection? At what
rate,in miles per hour, is the distance between the two trains changing at this time?