document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147020>Question 147020</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the following word problems:\r<BR>\n" );
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document.write( "A: Tina can run 12 miles in the same time it takes her ti bicycle 72 miles. If her bicycling rate is 20 miles/hour faster than her running rate, find each rate.\r<BR>\n" );
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document.write( "B: Kevin earned $165 interest for 1 year on investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107410 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=107410\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A: Tina can run 12 miles in the same time it takes her to bicycle 72 miles. If her bicycling rate is 20 miles/hour faster than her running rate, find each rate.<BR>\n" );
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document.write( "Let s = T's running speed<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+20) = T's biking speed<BR>\n" );
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document.write( "Write a time equation: Time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=distance%2Fspeed ALIGN=MIDDLE  ALT=\"distance%2Fspeed\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Time to Bike 72 mi = Time to run 12 mi<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=72%2F%28%28s%2B20%29%29 ALIGN=MIDDLE  ALT=\"72%2F%28%28s%2B20%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2Fs ALIGN=MIDDLE  ALT=\"12%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cross multiply, find s:<BR>\n" );
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document.write( "72s = 12(s+20)<BR>\n" );
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document.write( "72s = 12s + 240<BR>\n" );
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document.write( "72s - 12x = 240<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F60 ALIGN=MIDDLE  ALT=\"240%2F60\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 4 mph is T's running speed<BR>\n" );
document.write( "and <BR>\n" );
document.write( "24 mph is T's biking speed<BR>\n" );
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document.write( "Check solutions to see if the times are equal<BR>\n" );
document.write( "72/24 = 3 hrs<BR>\n" );
document.write( "12/4 = 3 hrs<BR>\n" );
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document.write( "B: Kevin earned $165 interest for 1 year on investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500?<BR>\n" );
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document.write( "Using the interest formula PRT = I; here t = 1 so it is just:<BR>\n" );
document.write( "1500R = 165<BR>\n" );
document.write( "R = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=165%2F1500 ALIGN=MIDDLE  ALT=\"165%2F1500\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "R = .11 or 11% interest<BR>\n" );
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document.write( "For $2500 at 11%<BR>\n" );
document.write( ".11 * 2500 = $275<BR>\n" );
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document.write( "You can also use ratio: (x = interest amt on $2500))<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F165 ALIGN=MIDDLE  ALT=\"x%2F165\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2500%2F1500 ALIGN=MIDDLE  ALT=\"2500%2F1500\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1500x = 165 * 2500<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=412500%2F1500 ALIGN=MIDDLE  ALT=\"412500%2F1500\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = $275 <BR>\n" );
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