document.write( "Question 62947: two cars leave an intersection at the same time and travel in opposite directions. one car travels at 20mph and the other car travels at 60mph how long will it take for the two cars to be 240 miles apart? \n" ); document.write( "
Algebra.Com's Answer #43783 by 303795(602)\"\" \"About 
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Using the idea that one car travels 20 miles in one hour and the second travels 60 miles in an hour then the cars are getting further apart at a rate of 80 miles per hour (their combined speed is 80 miles per hour).\r
\n" ); document.write( "\n" ); document.write( "The time taken to travel 240 miles at a speed of 80 miles per hour is 240/80 = 3 hours
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