document.write( "Question 1071216: Reena rode her skateboard to her uncle's house, 12 miles away. A wheel broke just as she arrived, so Reena borrowed her uncle's bicycle to return home. Traveling by bicycle, she was able to go twice as fast, and returned home in 2 hours less time than it took to go to her uncle's house. How long did it take Reena to get home on the bicycle? \n" ); document.write( "

Algebra.Com's Answer #686128 by josgarithmetic(39616) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "              SPEED       TIME      DISTANCE\r\n" );
document.write( "SKATE          r           t          12\r\n" );
document.write( "BIKE          2r          t-2         12\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"system%28rt=12%2C%282r%29%28t-2%29=12%29\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"2rt-4r=12\"$
\n" ); document.write( " $\"2%2A12-4r=12\"$
\n" ); document.write( " $\"2%2A3-r=3\"$
\n" ); document.write( " $\"-r=3-6\"$
\n" ); document.write( " $\"highlight%28r=3%29\"$ ----------speed on skateboard\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"rt=12\"$
\n" ); document.write( " $\"t=12%2Fr\"$
\n" ); document.write( " $\"t=12%2F3\"$
\n" ); document.write( " $\"highlight%28t=4%29\"$ ---------time, hours, on skateboard\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"t-2=highlight%282%29\"$ -------time going back by bicycle \n" ); document.write( "

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