document.write( "Question 633988: A person travvelled a particular distance at the rate of 30 kilometers per hour but returned at a speed of 20 kilometers per hour.what was his average speed? \n" ); document.write( "
Algebra.Com's Answer #399329 by richwmiller(17219)\"\" \"About 
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Not enough info. How many hours each way? \n" ); document.write( "
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