There were two sisters walking to school, Jahara and Jewel. They needed to walk 1 kilometer to get to school. One day, they decided to have a race to see who could get there faster. They both began walking at the same time, but at different speeds. In the end, Jahara reached the school after 25 minutes, while Jewel arrived in school after 20 minutes. Answer the following questions: 1. How far did they walk to school? 2. How much time did it take Jahara to arrive in school? 3. How much time did it take Jewel to arrive in school? 4. Who arrived first? - 5. Why did Jewel arrive first?