document.write( "Question 208473: You can ride a bicycle 15 mph. Your sister rides 12 mph. You give her a one hour head start. In how many hours will you catch up if neither of you stops. \n" ); document.write( "
Algebra.Com's Answer #157721 by Alan3354(69443)\"\" \"About 
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\n" ); document.write( "In 1 hour, she gets 12 miles away.
\n" ); document.write( "You gain on her at 3 mph (15-12).
\n" ); document.write( "12/3 = 4 hours.
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