document.write( "Question 429691: Girl drives or bikes from her house to the park.Her speed when driving is 36mph, and her speed when biking is 12mph. If it takes her 1/2 hr less to drive, how long does it take her to get to the park and how long is the park from her home? \n" ); document.write( "
Algebra.Com's Answer #298465 by ankor@dixie-net.com(22740)\"\" \"About 
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Girl drives or bikes from her house to the park.
\n" ); document.write( "Her speed when driving is 36mph, and her speed when biking is 12mph.
\n" ); document.write( " If it takes her 1/2 hr less to drive, how long does it take her to get to the
\n" ); document.write( " park and how long is the park from her home?
\n" ); document.write( ":
\n" ); document.write( "Let d = distance to the park
\n" ); document.write( ":
\n" ); document.write( "Write a time equation, time = dist/speed
\n" ); document.write( ":
\n" ); document.write( "Bike time - drive time = .5 hr
\n" ); document.write( "\"d%2F12\" - \"d%2F36\" = .5
\n" ); document.write( "Multiply by 36, results:
\n" ); document.write( "3d - d = .5(36)
\n" ); document.write( "2d = 18
\n" ); document.write( "d = \"18%2F2\"
\n" ); document.write( "d = 9 mi to the park
\n" ); document.write( ":
\n" ); document.write( "Find the times
\n" ); document.write( "\"9%2F12\" = .75 hrs by bike
\n" ); document.write( "\"9%2F36\" = .25 hrs by car
\n" ); document.write( "------------------------
\n" ); document.write( "diff: .5 hrs, confirms our solutions
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