document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824176>Question 824176</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need more detail solution:\r<BR>\n" );
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document.write( "A child has a bag full of little toy bricks each of dimensions 1cm x 1 cm x<BR>\n" );
document.write( "1cm and decides to build a little wall with them. He wants to have 2 bricks in the top<BR>\n" );
document.write( "row, 4 in the second row from the top, 6 in the third row from the top, and so on,<BR>\n" );
document.write( "always placing two more bricks in every row below. If he has a total of 950 little<BR>\n" );
document.write( "bricks, how tall can he make his wall? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496179 by </B><A HREF=/tutors/aboutme.mpl?userid=kjmugno><B>kjmugno(4)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=kjmugno><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=496179\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Lets use a chart. So, row 1 has 2 bricks;\r<BR>\n" );
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document.write( "r o w - 1<BR>\n" );
document.write( "bricks- 2<BR>\n" );
document.write( "total(bricks)- 2\r<BR>\n" );
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document.write( "the word problem also provides us with the following information;\r<BR>\n" );
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document.write( "r o w - 1 2 3<BR>\n" );
document.write( "bricks- 2 4 6<BR>\n" );
document.write( "total-  2 6 12\r<BR>\n" );
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document.write( "now that we have a graph, its easier to use a little algebra to figure out an equation;\r<BR>\n" );
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document.write( "for row to bricks, the equation would be row*2=bricks. for row to total, it would be row1*2=total row2*3=total row3*4=total row4*5=total. do you see the correlation? \r<BR>\n" );
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document.write( "now, we need to figure out how many rows contain 950 bricks. Lets input 950 into our bricks total equation...<BR>\n" );
document.write( "rowX*X+1=950<BR>\n" );
document.write( "do you follow?<BR>\n" );
document.write( "lets solve for x....<BR>\n" );
document.write( "my favorite way to do this in questions like this is the process of elimination, its much quicker.<BR>\n" );
document.write( "so lets take a random number to use for x, lets say...15?<BR>\n" );
document.write( "okay.<BR>\n" );
document.write( "row15*16=950 ?<BR>\n" );
document.write( "15*16=240, so thats not it. but now we know we need a much larger number. lets go for....25?<BR>\n" );
document.write( "row25*26=950 ?<BR>\n" );
document.write( "25*26=650<BR>\n" );
document.write( "closer, but not quite it. we need a slighty larger number. lets go for 31?<BR>\n" );
document.write( "row31*32=950 ?<BR>\n" );
document.write( "31*32=992<BR>\n" );
document.write( "well, we almost got it!! its barely too big, lets knock it down ONE row.<BR>\n" );
document.write( "row30*31=950 ?<BR>\n" );
document.write( "30*31=930, which is the closest we can get without exceeding our number of bricks.\r<BR>\n" );
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document.write( "with 950 bricks, in the order of rows specified, your wall can be 30 rows high.<BR>\n" );
document.write( " </SPAN>\n" );
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