Answer:
1. 100 which Is the easier one
2. 5
I'm not really sure because I have not done this in a while but I think True
Step-by-step explanation:
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Suppose that this person drives at r mph going to the mountains, and gets there in 12 hours. Returning, this person drives at (r+20) mph and gets home in 8 hours. We don't know the distance yet, but can solve for the initial speed, r, by setting
d = 12r = (r+20)(8). Solving for r, r=40 mph (going) and (40+20)mph = 60 mph (returning. Since d=12 r, d = (12 hrs)(40 mph) = 480 miles (answer).
1/4 I think because you would limit the eights
