If x% of y is the same as of 80, then the value of xy is 


(a) 
320 
(b) 
400 
(c) 
640 
(d) 
None of these 
If x% of y is the same as of 80, then the value of xy is 


(a) 
320 
(b) 
400 
(c) 
640 
(d) 
None of these 