document.write( "Question 275106: In a 10 kilometer race, Bill ran 12 kilometers per hour while Leo ran 10 kilometers per hour. How long did it take for them to be 2/3 of a kilometer apart? \n" ); document.write( "
Algebra.Com's Answer #200711 by josmiceli(19441)\"\" \"About 
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Bill is pulling ahead of Leo at the rate of
\n" ); document.write( "\"12+-+10+=+2\" km/hr
\n" ); document.write( "The problem doesn't change if you think
\n" ); document.write( "of Leo as being stationary and Bill moving
\n" ); document.write( "at \"2\" km/hr. Now how long does it take
\n" ); document.write( "Bill to get \"2%2F3\" km from Leo?
\n" ); document.write( "\"t=d%2Fr\"
\n" ); document.write( "\"t+=+%282%2F3%29%2F2\" hr
\n" ); document.write( "\"t+=+1%2F3\" hr
\n" ); document.write( "In 20 min, they will be \"2%2F3\" km apart
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