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by sampath » Fri May 20, 2011 1:58 am
A car traveled from Los Angeles to San Francisco in 6 hours at an average rate of x miles per hour. If the car
returned along the same route at an average rate of y miles per hour, how long did it take for the car to make the entire round trip, in minutes?
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by pemdas » Fri May 20, 2011 2:18 am
distance between LA and S-F is 6x; the trip back was timed as 6x/y hours
we need to find time in minutes (6+ 6x/y)*60= 360(x+y)/y
sampath wrote:A car traveled from Los Angeles to San Francisco in 6 hours at an average rate of x miles per hour. If the car
returned along the same route at an average rate of y miles per hour, how long did it take for the car to make the entire round trip, in minutes?
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by Stuart@KaplanGMAT » Sat May 21, 2011 7:40 am
sampath wrote:A car traveled from Los Angeles to San Francisco in 6 hours at an average rate of x miles per hour. If the car returned along the same route at an average rate of y miles per hour, how long did it take for the car to make the entire round trip, in minutes?
Hi,

please always post both the source of your question and the answer choices. This question is tailor-made for picking numbers, but because you haven't included the choices we can't demonstrate that approach for you.
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