If carmen had 12 more tapes she would have twice as many tapes as jack
does carmen have fewer tapes than jack
a)jack has more than 5 tapes
b)carmen has fewer than 12 tapes
A dosent tell us anything
I think answer is B
Please confirm and explain
Re: simple DS
Say Carmen has x number of tapes and,
Jack has y number of tapes.
We are asked if y>x.
Then, our equation is x+12=2y
(I) If y>5, y>x whatever greater than 5 we take y. Sufficient!
(II) Again, if x<12, y>x whatever less than 12 we take x. Sufficient!
You can try a few values in the equation.
So, I think, the answer is (D).
Re: simple DS
Now let's try to find out the value of y-x
Originally Posted by YEHAA
y-x = y-(12-2y) = y-12
y>5 does not tell you whether or not (y-12) positive. So we can not conclude whether y>x or y<x, right?.
Statement 1 : Insufficient
Statement 2 :
y-x = (x+12)/2 - x = (12-x)/2
for all values of x<12, ((12-x)/2) is positive. - Sufficient
Answer is B
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