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) 100xy < x – y
=> given condns result in :
X9/X7 = [1+ (100(x-y)-xy)/10000] ----- condn I
even if x> y as stated in (1) THERE ARE CONDNS WHEN condn I is >1 or <1 say x=11,y=10 x9/x7 <1 and x=4,y=3 then x9/x7>1 => INSUFF
(2) says 100xy<x-y => xy<100(x-y) => x9/x7 >1 always
Its Now Or Never