SOLUTION: Two cars start 15 miles apart and travel in a straight line toward each other. If they are going at 20 and 55 miles per hour, respectively, how long does it take for them to meet u

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Question 874889: Two cars start 15 miles apart and travel in a straight line toward each other. If they are going at 20 and 55 miles per hour, respectively, how long does it take for them to meet up?
Found 2 solutions by reviewermath, josgarithmetic:
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Q:
Two cars start 15 miles apart and travel in a straight line toward each other. If they are going at 20 and 55 miles per hour, respectively, how long does it take for them to meet up?
A;
Let x = time it takes for them to meet up
20x + 55x = 15
75x = 15
x = 15/75 = 1/5 hours = 12 minutes

Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
They are approaching each other at 20+55=75 miles per hour.
75%2At=15
t=15%2F75
t=%283%2A5%29%2F%283%2A5%2A5%29
t=1%2F5
12 minutes