document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1192510>Question 1192510</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please tutor can you please help me figure out this problem. Thank you!<BR>\n" );
document.write( "The 3rd planet from the sun, earth, is said to be 4.54 × 10^9 years old. Modern humans have been walking on this planet for 3.0 × 10^5 years**. What percentage of time has the modern human occupied the earth? Express your answer as a complete sentence using scientific notation.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #824398 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=824398\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The 3rd planet from the sun, earth, is said to be 4.54 × 10^9 years old. Modern humans have been walking on this planet for 3.0 × 10^5 years**. What percentage of time has the modern human occupied the earth?<BR>\n" );
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document.write( "3*10^5 is 3e5.  Commonly used and used by some computer programming.<BR>\n" );
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document.write( "3e5/4.54e9 = 3/4.54e4<BR>\n" );
document.write( "As % = 100*3/4.54e4 = 3/4.54e2 = 3/454 % </SPAN>\n" );
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