The Guess аnd Check 2.0 tаble belоw shоws guesses аrranged tо solve the question posed in this problem: A train leaves Desmontville heading south at 6:00 AM going 55 miles per hour. Another southbound train leaves on a parallel track at 7:00 AM at 60 miles per hour. What time will be be when the two trains are the same distance from Desmontville? x (Column A) Travel time of first train in hours (Column B) Travel time of second train in hours (Column C) Distance traveled by first train in miles (Column D) Distance traveled by second train in miles (Column E) Results (Column F) Thoughts Noon (1200 hours) 6 hours 5 hours 6 hr x 55 mph = 330 miles 5 hr x 60 mph = 300 miles 330 > 300 First train went further so second train needs a little longer to catch up 2:00 (1400 hours) 8 hours 7 hours 8 hr x 55 mph = 440 miles 7 hr x 60 miles = 420 440 > 420 The trains are getting closer. Try a bigger jump 6:00 (1800 hours) 12 hours 11 hours 12 hr x 55 mph = 660 miles 11 hr x 60 mph = 660 miles 660 = 660 Bingo! Match each equation with the column it best represents.