Friday Night Bites

So last night I decided to make brownies.  The box said that 1/20 of the brownies contained 160 calories.  When the brownies had cooled, I cut them into 24 pieces.  Then I ate 3.

What fraction of the pan did I eat?

If you said 3/24 or 1/8, you are correct! (Oh, my goodness, I'm a little embarassed.)

Next question--if 1/20 of the pan contained 160 calories and I ate 1/8 of the pan, how many calories did I consume? (Hint: Use a proportion to figure this out.)

400 calories?!?!?

I need to end this post RIGHT NOW and go for a walk.