document.write( "Question 853179: Two cyclists, one averaging 10 miles per hour and the other 12 miles per hour, start from the same town at the same time. If they travel in opposite directions, after how long will they be 66 miles apart? \n" ); document.write( "

Algebra.Com's Answer #513940 by josmiceli(19441) $\"\"$ $\"About$

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Think of one of them as standing still and
\n" ); document.write( "the other one moving at the sum of their speeds
\n" ); document.write( "Let $\"+t+\"$ = the time in hours when they will be
\n" ); document.write( " $\"+66+\"$ miles apart
\n" ); document.write( "---------------------
\n" ); document.write( " $\"+66+=+%28+10+%2B+12+%29%2At+\"$
\n" ); document.write( " $\"+t+=+66%2F22+\"$
\n" ); document.write( " $\"+t+=+3+\"$
\n" ); document.write( "They will be 66 miles apart in 3 hrs
\n" ); document.write( "check:
\n" ); document.write( " $\"+d%5B1%5D+=+10t+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+10%2A3+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+30+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+d%5B2%5D+=+12%2A3+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+36+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+30+%2B+36+\"$
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+66+\"$
\n" ); document.write( "OK \n" ); document.write( "

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