document.write( "Question 328385: a long distance trucker travled 220 miles in one direction during a snow storm. The return trip in a rainy weather was accomplished at doubled the speed and took 5 hours less time. find the speed going. \n" ); document.write( "

Algebra.Com's Answer #235219 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Rate*Time=Distance
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"R1%2AT1=220\"$
\n" ); document.write( " $\"R2%2AT2=220\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"R2=2%2AR1\"$
\n" ); document.write( " $\"T2=T1-5\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "1. $\"R1%2AT1=220\"$
\n" ); document.write( "2. $\"2R1%2A%28T1-5%29=220\"$
\n" ); document.write( "From eq. 1,
\n" ); document.write( " $\"T1=220%2FR1\"$
\n" ); document.write( "Substituting into eq. 2,
\n" ); document.write( " $\"2R1%2A%28%28220%2FR1%29-5%29=220\"$
\n" ); document.write( " $\"440-10R1=220\"$
\n" ); document.write( " $\"-10R1=-220\"$
\n" ); document.write( " $\"highlight%28R1=22%29\"$ mph
\n" ); document.write( "Then from above,
\n" ); document.write( " $\"R2=44\"$ mph \n" ); document.write( "

\n" );