Bunuel wrote:
Z is 120% of Y. X is smaller than Z by 80%. What percentage is X of Y?
A. 96%
B. 50%
C. 45%
D. 40%
E. 24%
We can create the equations:
Z = 1.2Y
and
X = 0.2Z
X/0.2 = Z
Thus:
X/0.2 = 1.2Y
X = 0.24Y
X/Y = 0.24
X/Y * 100 = 0.24 * 100 = 24 percent
Answer: E