document.write( "Question 947998: Juan runs 4 Km in 30 minutes, how long will it take him to run 80 Km \n" ); document.write( "
Algebra.Com's Answer #578565 by rfer(16322)\"\" \"About 
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4/30=80/x
\n" ); document.write( "4x=2400
\n" ); document.write( "x=600 min or 10 hrs
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