document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1190225>Question 1190225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the distance from the earth to the sun is 9.3x10⁷ miles and the distance from Neptune to the sun is 2.8x10⁹ miles, the distance from the earth to the sun is what percent of the distance from Neptune to the sun?<BR>\n" );
document.write( "A) 2.7%<BR>\n" );
document.write( "B) 2.8%<BR>\n" );
document.write( "C) 2.9%<BR>\n" );
document.write( "D) 3.1%<BR>\n" );
document.write( "E) 3.3% </SPAN>\n" );
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document.write( "I'll write something like 10⁷ as 10^7\r<BR>\n" );
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document.write( "A = distance from earth to sun<BR>\n" );
document.write( "A = 9.3 * 10^7 miles approximately<BR>\n" );
document.write( "A = 93 million miles approximately\r<BR>\n" );
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document.write( "B = distance from Neptune to sun<BR>\n" );
document.write( "B = 2.8 * 10^9 miles approximately<BR>\n" );
document.write( "B = 2.8 billion miles approximately\r<BR>\n" );
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document.write( "Divide the two values (small/large) to get<BR>\n" );
document.write( "A/B = (9.3 * 10^7)/(2.8 * 10^9)<BR>\n" );
document.write( "A/B = (9.3/2.8) * (10^7)/(10^9)<BR>\n" );
document.write( "A/B = 3.321 * 10^(7-9)<BR>\n" );
document.write( "A/B = 3.321 * 10^(-2)<BR>\n" );
document.write( "A/B = 0.03321<BR>\n" );
document.write( "A/B = 3.321%<BR>\n" );
document.write( "A/B = <font color=red>3.3%</font><BR>\n" );
document.write( "The values are approximate.\r<BR>\n" );
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document.write( "Answer: <font color=red>E) 3.3%</font>\r<BR>\n" );
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document.write( "Side note: The distances are approximate since the sun and planets are moving all the time, and we don't have circular orbits (instead they are elliptical ones). <BR>\n" );
document.write( "The distances represent averages. <BR>\n" );
document.write( "Also, even if everything held perfectly still, then we'd still have approximations considering the vast magnitude of each number. <BR>\n" );
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