What is the % change in the area of a rectangle when its length increases by 20% and its width decreases by 20%?
Pick one
A) 0 %	B) 20 % increase	C) 20 % decrease	D) 4 % decrease	E) insufficient data

Rationale: "( 12 / 10 ) * ( 8 / 10 ) = 96 / 100 of original area 96 / 100 is a 4 % decrease from 100 / 100 - > d"
Answer: D