SOLUTION: I'm lost, trying to figure out this problem. I started working my graph to show D=RT, but after that, I just don't get it. Please help! This is the problem: On Wednesday, Rom

Question 101607This question is from textbook
: I'm lost, trying to figure out this problem. I started working my graph to show D=RT, but after that, I just don't get it. Please help! This is the problem:
On Wednesday, Roman drove to work in 45 minutes. On Thursday he averaged 12 miles per hour more, and it took him 9 minutes less to get to work. How far does he travel to work? This question is from textbook

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
d=.75r ... d=.6(r+12) ... .75r=.6r+7.2 ... .15r=7.2 ... r=7.2/.15

d=.75(7.2/.15) ... d=36 miles

the decimals are from converting minutes to hours
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