Katrina took a train trip to visit her aunt. By 11:15 the train had traveled 40 miles. By 1:15 the train had traveled an additional 20 miles. Katrina is now halfway to her aunt's house. At what time will she reach her aunt's house at the train's current speed? a. 6:45 c. 3:15 b. 7:15 d. 4:30