The positive number a is q percent greater than the positive number b, which is z percent less than a itself. If a is increased by z percent, and the result is then decreased by q percent to produce a positive number c, which of the following could be true?
I. c > a
II. c = a
III. c < a Pick
A) I only
B) II only
C) III only
D) I and II only
E) II and III only
Let q = 10% then z = 100/11 %   let b = 100 then a = 110   after increasing a by z and decreasing by q we get c= 108   therefore c&lt;a   III only it is answer
<result>C</result>
The positive number a is q percent greater than the positive number b, which is z percent less than a itself. If a is increased by z percent, and the result is then decreased by q percent to produce a positive number c, which of the following could be true?
I. c > a
II. c = a
III. c < a