SOLUTION: At 2:45 pm you are 112 miles from Dallas. You want to be in Dallas at 4:30 pm. What is the average number of miles per hour you must travel to be on time?

SOLUTION: At 2:45 pm you are 112 miles from Dallas. You want to be in Dallas at 4:30 pm. What is the average number of miles per hour you must travel to be on time?

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Question 105890This question is from textbook Holt Algebra 1
: At 2:45 pm you are 112 miles from Dallas. You want to be in Dallas at 4:30 pm. What is the average number of miles per hour you must travel to be on time? This question is from textbook Holt Algebra 1

Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
4:30
2:45
------subtract
1:45 time to get there= 1 3/4 h =7/4 h
.
d=st d=distance s=speed t=time
112=(7/4)s
448=7s multiply each side by 4.
s=64 mph divide each side by 7.
Check:
64*7/4=112
Ed
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