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 6:25 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 10 minutes. If David arrives at the station at 8:10 AM, how many minutes will he have to wait for the next train? 2. Josh biked from his home to his high school at 6.6 miles per hour. When he returned home from school, using the same route, he biked at 3.4 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 160 miles. Helen started to drive from place A to place B at 08:00 AM. The speed during the first half of the trip was 47 mph. The speed during the second half of the trip was 33 mph. How long (in hours) did it take Helen 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 24 meters per second. Its length is 160 meters. The slower one is driving at the speed of 16 meters per second. Its length is 280 meters. How many seconds will it take from the time they meet to the time they separate completely? |