document.write( "Question 775312: Mike and Sammy left the bus terminal at the same time and traveled in opposite directions. Mikes bus traveled 20mph slower than Sammy's. After 3 hours, their buses were 270 miles apart. How fast was each bus traveling? \n" ); document.write( "

Algebra.Com's Answer #472777 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
It is the same problem if one is standing still
\n" ); document.write( "and the other is moving away at the sum
\n" ); document.write( "of their speeds
\n" ); document.write( "Let $\"+s+\"$ = the speed of Sammy's bus in mi/hr
\n" ); document.write( " $\"+s+-+20+\"$ = the speed of Mike's bus in mi/hr
\n" ); document.write( "--------------------
\n" ); document.write( " $\"+270+=+%28+s+%2B+s+-+20+%29%2A3+\"$
\n" ); document.write( " $\"+270+=+%28+2s+-+20%29%2A3+\"$
\n" ); document.write( " $\"+270+=+6s+-+60+\"$
\n" ); document.write( " $\"+6s+=+330+\"$
\n" ); document.write( " $\"+s+=+55+\"$
\n" ); document.write( " $\"+s+-+20+=+35+\"$
\n" ); document.write( "---------------
\n" ); document.write( "Sammy's speed was 55 mi/hr
\n" ); document.write( "Mike's speed was 35 mi/hr
\n" ); document.write( "---------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+270+=+%28+s+%2B+s+-+20+%29%2A3+\"$
\n" ); document.write( " $\"+270+=+%28+55+%2B+35+%29%2A3+\"$
\n" ); document.write( " $\"+270+=+90%2A3+\"$
\n" ); document.write( " $\"+2780+=+270+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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