<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV>well, 0.15 is 15% of 1.0, not of 28.05, so the result of 28.2 is incorrect.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>He isn't saying "28.05 + 0.15" He IS saying "28.05 + 15% OF 28.05"</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>the Tiger calculator is, IMHO, misinterpreting our use of the % key in the calc. if you do</DIV><DIV>"100 + 15%," the Tiger calculator gives you "100.15" which ain't right.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>The tiger calculator 'assumes' you want to add 15% OF 1 to the first number, which is idiotic. Why should the calculator assume you're wanting to add 15% OF 1?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Put in people language, this is what we want: "Calculator: here's my original number. Calculate 15% OF that number, add the two together, give me the result."</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Yeah, we all know that we could do this: "28.05 * 0.15 M+" Then "MR + 28.05 =" or we could do </DIV><DIV>"28.05 + (28.05*0.15)"</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>But why should WE be 'forced' to do the algebraic operation when we have a calculator which should do it for us?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>nk</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR><DIV><DIV>On Nov 27, 2005, at 1:09 AM, John Baltutis wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">Really? The result should be exactly as mentioned before: 28.05 + 0.15 =</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">28.2, because that's what you entered using RPN: first number (28.05),</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">enter it, second number (15% = 0.15), operator (sum them). Nowhere in your</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">scheme did you tell the calculator to take 15% of the first number. If you</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">got an intermediate result of 4.2075, without any operation, then I'd say</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Gill Sans" size="3" style="font: 12.0px Gill Sans">your HP 12C is in error.</FONT></P> </BLOCKQUOTE></DIV><BR></BODY></HTML>