Answer:
84 times
Step-by-step explanation:
Let x be the number of times the train will stop at 12 hours
7 times = 1 hour
X times = 12 hours
X times = 12 x 7 / 1
= 84 times
86 - 12 = 74
74 + 12 = 86
7.5 miles
Half of 5 equals 2.5. Bobby already walked 5 miles so you add the 2.5 since he walked another half of that distance. 5 + 2.5 = 7.5
x = 7/9
