If y is 25 percent greater than x, then x is what percent less than y?  Options.
A) 12.5%
B) 15%
C) 20%
D) 25%
E) 33%
y = 1.25x   x = y/1.25 = 4y/5 = y - (1/5)*y   1/5 is 20%.   The answer is 20%.
<result>C</result>
If y is 25 percent greater than x, then x is what percent less than y?