Let rectangle has dimensions x and y
St1: 2x+2y = 720, x+y = 360: INSUFF
St2: Clearly INSUFF
Min area could be very small. So 1 bag may be SUFF
Max area is when x= y = 180
Max area = 32400
Max bags needed = 7
So it could be anything from 1 to 7.
But if the perimeter is less than 280 then it is C.
SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008