x is what % of x problems

GreedIsGood
Sat, 07 Aug 2010 19:34:14 +0000

Wow this problem very easy, just look at the answer choices. 12.8, and 800 are out of the window. And 128 seems a bit high so quickly check what .4x80 is. Bam its 32. [C]

For these types of problems, before looking at the answer choices think of a reasonable answer (ball park it), and quickly check the answer choices closest to your guess. This method isn’t error prone, and its reasonably fast.