document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208192>Question 208192</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321331793/algebrahomeworkh>A Problem Solving Approach to Mathematics for Elementary School Teachers</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A Boeing 747 jet is approximately 230 ft long and has a<BR>\n" );
document.write( "wingspan of 195 ft. If a scale model of the plane is about<BR>\n" );
document.write( "40 cm long, what is the model’s wingspan?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157554 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=157554\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A Boeing 747 jet is approximately 230 ft long and has a<BR>\n" );
document.write( "wingspan of 195 ft. If a scale model of the plane is about<BR>\n" );
document.write( "40 cm long, what is the model’s wingspan?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A ratio equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=230%2F195 ALIGN=MIDDLE  ALT=\"230%2F195\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2Fx ALIGN=MIDDLE  ALT=\"40%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cross multiply<BR>\n" );
document.write( "230x = 195 * 40<BR>\n" );
document.write( "230x = 7800<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7800%2F230 ALIGN=MIDDLE  ALT=\"7800%2F230\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 33.9 cm is the model's wingspan<BR>\n" );
document.write( ";<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Check solution on a calc:<BR>\n" );
document.write( "230/195 ~ 1.18<BR>\n" );
document.write( "40/33.9 ~ 1.18<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );