Kara and Anna are sisters that go to the same school. They started simultaneously moving from their school to their home at different rates on the same route. Kara took a bicycle and Anna a car, the rate of which was 5 times faster than Kara's bicycle. At the half-way point, Anna's car broke and she began to walk home at a rate 2 times slower than the bicycle's rate. Who reached home last? What was the percent increase in time spent versus the other sister?