[quote="gluon"]The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

(1) x > y

(2) xy/100 <x>y.

I say D too.

Look at the chart: Lets say rent started @ 100.

yr: 97 98 99

amnt 100 110 amnt>100.

X is 10% and Y has to be less than X. So even if Y is 9.9999999999999999999% In 99 its still greater by fractions of a penny.

or if Y is just 9% then the amount in 99 is 1 penny higher than 97.

S2: basically says the same thing as S1.

xy/100<x> xy<100x-100y. For this inequality to be true, x must be greater than Y. if it isn't then you wind up with a negative number on the right side.

Also the left side of the inequality has to be positive since we cannot have negative percentages in this problem (I think

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