document.write( "Question 952777: You can ride a bike for 15 mph. Your sister tides 12 mph. You give her a one hour head start. In how many hours will you catch up if niether of you stops? \n" ); document.write( "
Algebra.Com's Answer #581823 by Alan3354(69443)\"\" \"About 
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You can ride a bike for 15 mph. Your sister tides 12 mph. You give her a one hour head start. In how many hours will you catch up if niether of you stops?
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\n" ); document.write( "If you mean at 15 mph:
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\n" ); document.write( "After 1 hr, she's 12 miles away.
\n" ); document.write( "You \"gain on her\" at 3 mi/hr (15-12)
\n" ); document.write( "12/3 = 4 hours.
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