x,y , and z are positive integers. Is x% of y bigger than y% of z ?
2: z-y =y-z
* Can we assume x=y=z for eqation 1..just one more case?
x % of y = xy/100
y% of z = yz/100
question is asking is (xy/100) > (yz/100) ?
or is xy > yz
we know x,y and z are +ve
so the question can be simplified to is x>z ?
(1) tells us x=z . that means x is not > z. So sufficient.
(2) no infor about x and z. Not suff.
Answer is A ?
P.S. I don't get your question reg x=y=z
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