document.write( "Question 256164: two buses that are 90 mi apart travel toward each other on an interstate highway. the slower bus which departs at 9:30 AM travels 5mi/h slower than the buse that departs at 9:45 AM. At 10:30 AM the buses pass each other. Determine the rate of each bus.\r
\n" ); document.write( "\n" ); document.write( "Must use two variables.
\n" ); document.write( "

Algebra.Com's Answer #188399 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
\"the slower bus which departs at 9:30 AM travels 5mi/h slower\" ___ S + 5 = F\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "r * t = d\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(S * 1) + (F * 3/4) = 90 ___ 4S + 3F = 360\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "substituting ___ 4S + 3S + 15 = 360 ___ 7S = 345 ___ S = 345/7\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "substituting ___ 345/7 + 35/7 = F ___ 380/7 = F
\n" ); document.write( "
\n" );