View Single Post
 20 Jul 2010 Lordbob75 Windows 7 Ultimate x64, Mint 9 7,128 posts In the Crust Quote: Originally Posted by clunkfish    Quote: Originally Posted by Thorsen 40%= 4/10= 0.4 175% = 175/100 = 1.75 .4 * 1.75 = 0.7 = 70% By your analysis, a 100% increase would be worthless: 40%= 4/10= 0.4 100% = 100/100 = 1.00 .4 * 1.00 = 0.4 = 40% So a 100% increase from 40% would be...still 40%. This is clearly wrong. What's more, a 50% increase by this method would mean a decrease: 40%= 4/10= 0.4 50% = 50/100 = 0.5 .4 * 0.5 = 0.2 = 20% We started with 40%, increased it by half, and ended up with... only 20%. This is even more clearly wrong. A 25% increase from 40% is 50%; a 50% increase from 40% is 60%; a 100% increase from 40% is 80%; and a 175% increase from 40% is 110%. So either standard air conditioners generally work at rather low efficiencies and the new system is going to improve them by an absolutely astonishing amount, or this "175% increase" they quote is a mistake. My money is on option 2 No, you are still wrong. 50% is 1/2 correct? So 1/2 of 50% is 25%. 175% is 7/4, so 7/4 of 50% is 87.5% ~Lordbob My System Specs