document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=997723>Question 997723</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a person bikes 2.8miles in 10 minutes,how far can he bike in 1.5 hours </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #615689 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=615689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 10 miles / 60 = 1/6 hours.<BR>\n" );
document.write( "he bikes 2.8 miles in 1/6 hours.<BR>\n" );
document.write( "1.5 houors = x * 1/6 hours.<BR>\n" );
document.write( "x = 6 * 1.5 = 9.<BR>\n" );
document.write( "he travels 2.8 * 9 = 25.2 miles in 1.5 hours.\r<BR>\n" );
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document.write( "two ways to solve this.\r<BR>\n" );
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document.write( "you have to convert hours to minutes or minutes to hours to get the correct answer.\r<BR>\n" );
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document.write( "i converted minutes to hours above.<BR>\n" );
document.write( "i'll convert hours to minutes down below to show you that you get the same answer if you do the conversions correctly.\r<BR>\n" );
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document.write( "1.5 hours * 60 minutes per hour = 1.5 *I 60 = 90 minutes.\r<BR>\n" );
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document.write( "ratio method:\r<BR>\n" );
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document.write( "2.8 / 10 = x / 90\r<BR>\n" );
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document.write( "cross multiply to get 2.8 * 90 = 10 * x\r<BR>\n" );
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document.write( "solve for x to get x = 2.8 * 90 / 10 = 2.8 * 9 = 25.2\r<BR>\n" );
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document.write( "rate * time = distance method:\r<BR>\n" );
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document.write( "if thd person travels 2.8 miles in 10 minutes, then the formula becomes:\r<BR>\n" );
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document.write( "rate * 10 = 2.8\r<BR>\n" );
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document.write( "solve for rate to get rate = 2.8 / 10 = .28 miles per minute.\r<BR>\n" );
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document.write( "at this rate, if he travels for 90 minutes, the equation becomes:\r<BR>\n" );
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document.write( ".28 * 90 = distance\r<BR>\n" );
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document.write( "solve for distance to get rate = .28 * 90 = 25.2\r<BR>\n" );
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document.write( "the ratio method works well when it is a direct ratio.\r<BR>\n" );
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document.write( "if it is an inverse ratio, it could get tricky.\r<BR>\n" );
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document.write( "i prefer the rate * time = distance method.\r<BR>\n" );
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document.write( "it works every time, whether or not the problem winds up being a direct ratio or an inverse ratio.\r<BR>\n" );
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document.write( "this problem involved a direct ratio, so it was relatively easy to solve using the ratio method.\r<BR>\n" );
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document.write( "how you choose to do it is up to you.\r<BR>\n" );
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document.write( "always check your answer to the original problem to make sure you got it right.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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