Samantha begins biking at 12 mph from the center of town towards the ocean at 12:00 noon. Later that day, at 1:15 pm, Anthony begins biking along the same route as Samantha at 15 mph. How many miles will Samantha have covered when Anthony catches her?
+128474 Note that the distance that Samantha covers BEFORE Anthony starts =
Rate * Time =
12 * (1 + 1/4)hrs =
12 * (1.25) = 15 miles
And each hour....the distance that he closes on Samantha = 15 - 12 = 3 miles
So....the time it will take to catch her is
Distance Samantha is ahead 15
___________________________ = ______ = 5 hrs
Distance Anthony closes per hour 3
