Distance, Speed & Time (2)( Week 43 Evaluation) 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 6:55 AM. After that the trains on track A leave for the city every 7 minutes and the trains on track B leave for the city every 18 minutes. If Jackson arrives at the station at 7:30 AM, how many minutes will he have to wait for the next train? 2. Jackson biked from his home to his high school at 6.4 miles per hour. When he returned home from school, using the same route, he biked at 3.6 miles per hour. If the total round trip took 25 minutes, what was the distance from his home to his school (in miles)? 4. The distance between place A and place B is 240 miles. Anne started to drive from place A to place B at 08:00 AM. The speed during the first half of the trip was 34 mph. The speed during the second half of the trip was 46 mph. How long (in hours) did it take Anne to get to place B from place A? 5. Curtis climbed a mountain and then immediately descended on the same route. It took a total of 144 minutes. He descended the mountain 10 feet per minute faster than when climbing up. If the time taken for the descending was 63 minutes, what was the total distance (in feet) for the descending? 6. Two trains are driving toward each other. The faster one is driving at the speed of 27 meters per second. Its length is 120 meters. The slower one is driving at the speed of 13 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? 7. Curtis went a round trip from his home to an airport to pick up a friend. It took a total of 7.5 hours including waiting 1 hour in the airport. He was able to drive 15 km/h faster to the airport than back from the airport. If the time was taken to get airport was 3 hours, what was the distance (in km) from Curtis's home to the airport? 8. Andy can row 800 meters against the current (upstream) in 10 minutes and row the same distance with the current (downstream) in 8 minutes. Find the speed of the current in meters per minute? 9. Susan drives at 42 miles per hour from place A to place B. After driving for 4 hours, the rest of the trip is 24 miles less than half of the trip. If Susan drives at 30 miles per hour from then on, how many more hours will it take Susan to get to place B? 10. It took Jessica 80 minutes to get to place B from place A, and it took Eric 60 minutes to get to place B from place A. 15 minutes after Jessica started out from place A, Eric also started out from place A. How long (in minutes) would it take for Eric to catch up with Jessica? |