if 500 is a multiple of 100 closest to x & if 400 is also a multiple of 100 closest to y , which multiple of 100 is closest to x+y?
1.x<500
2.y<400
1.x<500
2.y<400
from the question, we can conclude that x belongs to [451,549] and y belongs to [351,449].
From (1) : x belongs to [451,499]. So, x+y belongs to [802,948]. So, the closest multiple of 100 can be either 800 or 900
Insufficient
From(2) : y belongs to [351,399]. So, x+y belongs to [802,948]. So, the closest multiple of 100 can be either 800 or 900
Insufficient
Combining (1) & (2); we get x belongs to [451,499] and y belongs to [351,399]. So, x+y belongs to [802,898]. So, the closest multiple of 100 can be either 800 or 900.
Insufficient
So, the answer is E .
