whether x and y are positive ?
a> 2x - 2y =1
b> x/y >1

• x-y=0.5
  x/y>1
  
  combining both 1/2y > 0 and 1/2x >0
  
  => x,y>0
  
  Both required to answer the question
• 11 years agoHelpfull: Yes(12) No(13)
• x-y=0.5
  From the above we can conclude that either both are positive or both negative.
  For example if we take x=3.5 then y should be 3 to make difference 0.5
  But if x= -3.5 then y should be -4 to make the difference 0.5
  
  Taking x> y makes both to be positive so both statement required
• 9 years agoHelpfull: Yes(3) No(2)
• YES,x=2.5,y=2, both satisfies
  
• 11 years agoHelpfull: Yes(2) No(9)
• x-y=0.5
  x/y>1 we can write it as x>y
  that means x always greater than y so x positive....both data needed
• 9 years agoHelpfull: Yes(1) No(3)
• yes both are positive.
  take x=1 and y=.5 then 2x-2y=1
  either statement are sufficient.
• 9 years agoHelpfull: Yes(0) No(2)