The Coleman family is moving to a new home on the other side of the state. Lucy Coleman leaves first, hauling a trailer and traveling at a constant speed of 55 miles per hour. When her husband, Tristan, leaves in his car, Lucy is already 10 miles away. Tristan drives at a constant speed of 60 miles per hour.Which equation can you use to find h, the number of hours it will take for Tristan to catch up to Lucy?10+55h=60h55+10h=60hHow long will it take for Tristan to catch up to Lucy?Simplify any fractions. hours

Last Saturday, Erin and Krysta each biked the Prairie Point Trail, a 20-mile path leading to the peak of Prairie Point Mountain. Both girls started at 7:00 A.M., heading toward the peak. Erin started at the trailhead and biked at a constant speed of 10 miles per hour. Krysta started at an entry point 3 miles ahead of the trailhead and rode at a steady pace of 8 miles per hour.If each girl kept a constant speed, which equation can you use to find h, the number of hours it took for Erin to catch up to Krysta?10=3h+810h=8h+3How long did it take for Erin to catch up to Krysta?Simplify any fractions. hours

The Caldwells are moving across the country. Mr. Caldwell leaves 2.52.5 hours before Mrs. Caldwell. If he averages 45mph45⁢mph and she averages 55mph55⁢mph, how many hours will it take Mrs. Caldwell to catch up to Mr. Caldwell?

Billy and his younger brother, Reggie, are going to race each other to the park. They will start running at the same time, but Billy is letting Reggie start 20 meters ahead. Billy can run 8 meters per second, and Reggie can run 6 meters per second.Which equation can you use to find s, the number of seconds it will take for Billy to catch up to Reggie if they each run as fast as they can?20+6s=8s20s+6=8sHow long will it take for Billy to catch up to Reggie?Simplify any fractions. seconds

Two cars start moving from the same point. One travels south at 56 mi/h and the other travels west at 42 mi/h. At what rate (in mi/h) is the distance between the cars increasing three hours later? mi/h

Tori's family is leaving for a camping trip in the morning. Marshall Meadows, where they will camp, is 325 miles away. Tori's parents plan to drive for 3 hours in the morning, then stop for lunch. They will complete the trip in the afternoon. They expect their average speed will be 50 miles per hour. How many hours will they drive in the afternoon?