document.write( "Question 696355: Two cars leave town at the same time going in opposite directions. One of them travels at 60 miles per hour and the other car (driving in traffic) averages only 30 mph. In how many hours will they be 150 miles apart? \n" ); document.write( "

Algebra.Com's Answer #428958 by josmiceli(19441) $\"\"$ $\"About$

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Add their rates as if one car was standing still
\n" ); document.write( "and the other was traveling at the sum of their speeds
\n" ); document.write( "Let $\"+t+\"$ = the time in hrs when they will be $\"+150+\"$ mi apart
\n" ); document.write( "-------------
\n" ); document.write( " $\"+150+=+%28+60+%2B+30+%29%2At+\"$
\n" ); document.write( " $\"+t+=+150+%2F+90+\"$
\n" ); document.write( " $\"+t+=+1.667+\"$ hrs
\n" ); document.write( "Note that $\"+.667%2A60+=+40+\"$
\n" ); document.write( "They will be 150 mi apart in 1 hr and 40 min\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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