Answer 6: The train traveled 20 miles in 6 minutes. To find Jack's speed, we need to convert 6 minutes to hours, which is 6/60 = 0.1 hours. Then, we can use the formula distance = speed x time. 20 miles = speed x 0.1 hours speed = 20/0.1 = 200 miles per hour. Therefore, Jack is traveling at 200 miles per hour.

Answer 7: Mary's distance can be found using the formula distance = speed x time. distance = 75 miles/hour x (24 minutes/60 minutes) distance = 30 miles Therefore, Mary will travel 30 miles if she rides her motorbike for 24 minutes at a speed of 75 miles/hour.