Jordan passed a point on a track at a constant speed of 50 miles per hour. Then, 15 minutes later, Pauline passed the same point at a constant speed of 60 miles per hour. If both runners maintained their speeds , how long after he passed the gas station did Pauline catch up with Jordan?
Choose one.
A) 30 min B) 45 min C) 1 hr D) 1 hr 15 min E) 1 hr 30 min
When Pauline is at the point, Jordan is 50/4 miles ahead on the ahead. (the distance covered by him in 15 min)   every hour, pauline runs 10 miles more than Mary. how many hours will it takes him to run 50/4 miles more? the answer is (50/4)/10 = 25/20=1h15min.   Answer 1 hr 15 min
<result>D</result>
Jordan passed a point on a track at a constant speed of 50 miles per hour. Then, 15 minutes later, Pauline passed the same point at a constant speed of 60 miles per hour. If both runners maintained their speeds , how long after he passed the gas station did Pauline catch up with Jordan?