Winter heating costs, Beckett Heat Manager
"Pat" wrote in message
oups.com...
Hey, if it saves 10%, buy 10 of them and you have free heat, won't
you???
OK I know that was meant to be facetious, but as a former math major this
type of logic bugs me. You see it all the time, like on Leno's headlines --
the ad says "50% off, then take an ADDITIONAL 50% off..." Leno chuckles
"must be free, hey what a deal!"
Wrong.
50% off of 50% off is 25% of the original, not 0%.
And 10% off 10 times in a row is about 35% of the original value, not 0%.
And that's of course assuming that the effect is stackable, which of course
it probably isn't.
Carry on, just being geeky...
-Tim
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