

400??? Holy fuck. Are you running the AC with the windows open? Or is your house 5000 sq ft? You need an energy consultant more than anything. How much insulation do you have? And no, a paper towel stapled into a wall doesn’t count. I’m also taking a wild guess that your windows are single pane from the 60’s and don’t close all the way?


Oddly, yes.
Percentages also add together in partials. As in 10%+5%+2% = 17%
So, you start with the 10% by moving the decimal over 83.27 becomes 8.327
Then add half of that (5%) to its self and get 12.49 (rounded)
Then take the 10% number and move the decimal over once more (1%) for 0.833 and double it (from 1% to 2%) and get 1.666 and add that to your running total to get your answer of 14.16 (rounding)
And when I calculator check this I got 14.1559.