Data Sufficiency

sanju09 wrote:

aloneontheedge wrote:

sanju09 wrote:Under the spoiler was written: [spoiler]C, only if 150 are either smokers or drinkers; otherwise E is always true[/spoiler]

Since total number of drinkers are 120(i made a mistake while taking a screen shot,it reads as smokers)

x +y = 120
x = 0.4*120
hence C

The point raised by Stuart Kovinsky, that we can't make any assumptions in DS - nowhere does it say that all 150 had to be smokers or drinkers or both; is sufficient to accept [spoiler]E[/spoiler] as the right answer here.

[spoiler]Let's thank him from the deepest part of our hearts now[/spoiler]

Oh shit wat a trap
Thanks a lot Stuart Kovinsky

aloneontheedge wrote:

sanju09 wrote:

aloneontheedge wrote:

sanju09 wrote:Under the spoiler was written: [spoiler]C, only if 150 are either smokers or drinkers; otherwise E is always true[/spoiler]

Since total number of drinkers are 120(i made a mistake while taking a screen shot,it reads as smokers)

x +y = 120
x = 0.4*120
hence C

The point raised by Stuart Kovinsky, that we can't make any assumptions in DS - nowhere does it say that all 150 had to be smokers or drinkers or both; is sufficient to accept [spoiler]E[/spoiler] as the right answer here.

[spoiler]Let's thank him from the deepest part of our hearts now[/spoiler]

Oh shit wat a trap
Thanks a lot stewart

Trap never tangs like that; please recoil from making S hit here. Your 'thank' has gone in the wrong purse by the way, he's Stuart and Stewart is a different unassailable expert here with us, whom you can thank later.