Distance, Speed & Time (2)( Week 43 Practice) 1. In a train station, there are two tracks (A and B) going to a city. The earliest trains on both tracks leave for the city at 5:30 AM. After that the trains on track A leave for the city every 8 minutes and the trains on track B leave for the city every 12 minutes. If Jay arrives at the station at 7:25 AM, how many minutes will he have to wait for the next train? 2. Edward biked from his home to his high school at 5.8 miles per hour. When he returned home from school, using the same route, he biked at 4.2 miles per hour. If the total round trip took 15 minutes, what was the distance from his home to his school (in miles)? 4. The distance between place A and place B is 200 miles. Mary started to drive from place A to place B at 08:00 AM. The speed during the first half of the trip was 54 mph. The speed during the second half of the trip was 26 mph. How long (in hours) did it take Mary to get to place B from place A? 5. Two trains are driving toward each other. The faster one is driving at the speed of 21 meters per second. Its length is 160 meters. The slower one is driving at the speed of 19 meters per second. Its length is 240 meters. How many seconds will it take from the time they meet to the time they separate completely? |