document.write( "Question 669835: A car went 175 mph in 3 hours one way and 4.5 hours on the way back. What is the average miles? \n" ); document.write( "
Algebra.Com's Answer #416830 by ankor@dixie-net.com(22740)\"\" \"About 
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A car went 175 mph in 3 hours one way and 4.5 hours on the way back.
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\n" ); document.write( "let a = the average speed for the round trip; speed = dist/time
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\n" ); document.write( "a = \"2%28175%29%2F%28%283%2B4.5%29%29\" = \"350%2F7.5\" = 46\"1%2F3\" mph
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