document.write( "Question 1020264: Nick and James leaves home going in opposite directions. Nick is walking at 4mph and james is jogging at 6mph. after how long will they be 8 miles apart? \n" ); document.write( "

Algebra.Com's Answer #636240 by josmiceli(19441) $\"\"$ $\"About$

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Think of one of them as standing still.
\n" ); document.write( "Think of the other one moving at the sum
\n" ); document.write( "of their speeds.
\n" ); document.write( "Let $\"+t+\"$ = time in hrs for them to be 8 mi apart
\n" ); document.write( " $\"+8+=+%28+4+%2B+6+%29%2At+\"$
\n" ); document.write( " $\"+8+=+10t+\"$
\n" ); document.write( " $\"+t+=+.8+\"$
\n" ); document.write( " $\"+.8%2A60+=+48+\"$
\n" ); document.write( "They will be 8 mi apart in 48 min
\n" ); document.write( "----------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+d%5B1%5D+=+4t+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+4%2A.8+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+3.2+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+d%5B2%5D+=+6t+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+6%2A.8+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+4.8+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+3.2+%2B+4.8+\"$
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+8+\"$ mi
\n" ); document.write( "OK \n" ); document.write( "

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