document.write( "Question 1063893: Dahlia walks from her house at 2 km/h. After school, she jogs back home at 6 km/h and saves 15 min. How far does Dahlia live from school? \n" ); document.write( "

Algebra.Com's Answer #678962 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "              SPEED     TIME      DISTANCE\r\n" );
document.write( "WALK           2         t         d\r\n" );
document.write( "JOG            6        t-1/4      d\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The question asks for d.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"2t=d\"$
\n" ); document.write( " $\"t=d%2F2\"$
\n" ); document.write( "-
\n" ); document.write( " $\"6%28t-1%2F4%29=d\"$
\n" ); document.write( " $\"6%28d%2F2-1%2F4%29=d\"$
\n" ); document.write( " $\"3d-3%2F2=d\"$
\n" ); document.write( " $\"cross%28d-3%2F2=0%29\"$ ------------------arithmetic mistake
\n" ); document.write( " $\"highlight%28cross%28d=3%2F2=1%261%2F2%29%29\"$
\n" ); document.write( "should be as
\n" ); document.write( " $\"2d-3%2F2=0\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2d=3%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"d=3%2F%282%2A2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28d=3%2F4%29\"$ \n" ); document.write( "

\n" );