document.write( "Question 140585This question is from textbook Beginning Algebra
\n" ); document.write( ": The Jones family drove to Disneyland at 50 miles per hour and retruned on the same route at 40mph. Find the distance to Disneyland if the total driving time was 7.2 hours \n" ); document.write( "
Algebra.Com's Answer #102367 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Distance(d) equals Rate(r) times Time(t) or d=rt; r=d/t and t=d/r\r
\n" ); document.write( "\n" ); document.write( "Now we know that distance going=distance returning =d\r
\n" ); document.write( "\n" ); document.write( "time going=d/50
\n" ); document.write( "time returning=d/40\r
\n" ); document.write( "\n" ); document.write( "We are told that the above two times add up to 7.2 hr, so:\r
\n" ); document.write( "\n" ); document.write( "d/50+d/40=7.2 multiply each term by 200\r
\n" ); document.write( "\n" ); document.write( "4d+5d=1440
\n" ); document.write( "9d=1440 divide each side by 9
\n" ); document.write( "d=160 mi-------------------------------distance to Disneyland\r
\n" ); document.write( "\n" ); document.write( "CK
\n" ); document.write( "160/50 + 160/40=7.2\r
\n" ); document.write( "\n" ); document.write( "3.2 + 4=7.2
\n" ); document.write( "7.2=7.2\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor
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