SOLUTION: Please help...... Ok, Two cars leave from the same location and travel in opposite directions along a straight road. One car travels 30 mph while the other travels at 45 mph. Ho

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Question 779029: Please help......
Ok, Two cars leave from the same location and travel in opposite directions along a straight road. One car travels 30 mph while the other travels at 45 mph. How long will it take the two cars to be 255 miles apart?
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
use the rate times time = distance formula, r*t = d
30*t +45*t = 255
75t = 255
t = 3.4 hours