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20 Jul 2010  
clunkfish

Windows 7 Enterprise x64
 
 

Quote   Quote: Originally Posted by Thorsen View Post
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
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