document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=313393>Question 313393</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Martin ate 100 cookies in five days. Each day he ate 6 more than the day before. How many cookies did he eat on the first day? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #224128 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=224128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Martin ate 100 cookies in five days. Each day he ate 6 more than the day before. How many cookies did he eat on the first day?\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Let the amount of cookies that Martin ate on the 1st day be F\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Since he ate 6 more cookies than the previous day, then he would've eaten: \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(F + 6) cookies on the 2nd day<BR>\n" );
document.write( "F + 6 + 6, or (F + 12) cookies on the 3rd day<BR>\n" );
document.write( "F + 12 + 6, or (F + 18) cookies on the 4th day<BR>\n" );
document.write( "F + 18 + 6, or (F + 24) cookies on the 5th day\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Since he had eaten a total of 100 cookies in 5 days, then we have:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "F + (F + 6) + (F + 12) + (F  + 18) + (F + 24) = 100\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5F + 60 = 100\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5F = 40\r<BR>\n" );
document.write( "\n" );
document.write( "F = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2F5 ALIGN=MIDDLE  ALT=\"40%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 8\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Therefore, Martin ate <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%288%29 ALIGN=MIDDLE  ALT=\"highlight_green%288%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > cookies on the 1st day.\r<BR>\n" );
document.write( "\n" );
document.write( "-------------------<BR>\n" );
document.write( "Check<BR>\n" );
document.write( "-------------------\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Day 1: 8<BR>\n" );
document.write( "Day 2: 8 + 6 = 14<BR>\n" );
document.write( "Day 3: 14 + 6 = 20<BR>\n" );
document.write( "Day 4: 20 + 6 = 26<BR>\n" );
document.write( "Day 5: 26 + 6 = 32\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "In 5 days, he ate: 8 + 14 + 20 + 26 + 32 = 100 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );