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 6:35 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 16 minutes. If Ed arrives at the station at 7:30 AM, how many minutes will he have to wait for the next train? 2. Curtis biked from his home to his high school at 5.4 miles per hour. When he returned home from school, using the same route, he biked at 4.6 miles per hour. If the total round trip took 30 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. Morgan started to drive from place A to place B at 08:00 AM. The speed during the first half of the trip was 59 mph. The speed during the second half of the trip was 21 mph. How long (in hours) did it take Morgan to get to place B from place A? 5. Jackson climbed a mountain and then immediately descended on the same route. It took a total of 84 minutes. He descended the mountain 40 feet per minute faster than when climbing up. If the time taken for the descending was 21 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 30 meters per second. Its length is 200 meters. The slower one is driving at the speed of 10 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? 7. Tom went a round trip from his home to an airport to pick up a friend. It took a total of 4.5 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 1.5 hours, what was the distance (in km) from Tom's home to the airport? 8. Richard can row 1200 meters against the current (upstream) in 12 minutes and row the same distance with the current (downstream) in 10 minutes. Find the speed of the current in meters per minute? 9. Jennifer drives at 48 miles per hour from place A to place B. After driving for 3 hours, the rest of the trip is 30 miles less than half of the trip. If Jennifer drives at 28 miles per hour from then on, how many more hours will it take Jennifer to get to place B? 10. It took Laura 80 minutes to get to place B from place A, and it took Kevin 60 minutes to get to place B from place A. 18 minutes after Laura started out from place A, Kevin also started out from place A. How long (in minutes) would it take for Kevin to catch up with Laura? |