SOLUTION: I have tried very hard to come up with the equation for this problem. I figured that the answer is 8 miles but I am lost trying to write the equation Thank you. Ronald rode a

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Question 23000: I have tried very hard to come up with the equation for this problem. I figured that the answer is 8 miles but I am lost trying to write the equation Thank you.

Ronald rode away from home in a car at ther rate of 32mph. He walked back at the rate of 4mph. The round trip required 2 1/4 hours. How far did Ronald ride.

Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Let D = distance home.

D=RT

T=D%2FR
Time = time riding + time walking = 2.25 hours
D%2F32+%2B+D%2F4+=+2.25

Multiply both sides by the LCD which is 32:
32%2A%28D%2F32%29+%2B+32%2A%28D%2F4%29+=+32%2A2.25
D+%2B+8D+=+72
9D+=+72
D=+8+ miles

Does that look right??

R^2 at SCC