Question 1007255
 Candy and Delvis are riding bicycles in the same direction.
 Candy is traveling at a speed of 7 miles per hour, and Delvis is traveling at a speed of 11 miles per hour.
 In 5 hours what is the distance between them (assuming that they began at the same point and time)? 
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you can do this in your head, their relative speed is 11-7 = 4 mph
How far can you travel in 5 hrs at 4 mph, 4*5 = 20 mi