document.write( "Question 705603: two buses leave houston at the same time and travel in opposite directions. one bus averages 55mi/h and the other bus averages 45 mi/h. when will they be 400 mi apart? \n" ); document.write( "

Algebra.Com's Answer #434648 by josmiceli(19441) $\"\"$ $\"About$

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Yhey are moving apart at the sum of their speeds
\n" ); document.write( " $\"+55+%2B+45+=+100+\"$ mi/hr
\n" ); document.write( "They will be 400 mi apart in $\"+t+\"$ hrs
\n" ); document.write( " $\"+d+=+r%2At+\"$
\n" ); document.write( " $\"+400+=+100t+\"$
\n" ); document.write( " $\"+t+=+400%2F100+\"$
\n" ); document.write( " $\"+t+=+4+\"$
\n" ); document.write( "They will be 400 mi apart in 4 hrs \n" ); document.write( "

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