Is X positive? (1) 15X 16X (2) X + 15 0

Question

Is X positive?

(1) 15X > 16X
(2) X + 15 > 0

KSBGC · Answer

Statement 1;

15x > 16x

15x - 16x >0

x(15 - 16) >0

x(-1)>0

Therefore , x must be negative .

Sufficient.

Statement 2:

x + 15>0

x> -15

x could be 100 or 0.

NOT sufficient .

A is the correct answer.

Archit3110 · Answer

#1
15x-16x>0
-x>0
x has to be -ve
sufficient
#2
x+15>0
x can be -ve or +ve ; insufficeint 
IMO A

saurabh9gupta · Answer

My take -A

After looking at the solution.. i started laughing on myself..

I started to take integers and fractions in the negative and positive space.. took 1 min 20 sec..

But this can be solved using inequalities

Posted from my mobile device

freedom128 · Answer

Is X positive?

(1) 15X > 16X --> 0 > X
X is clearly negative
SUFFICIENT

(2) X + 15 > 0 --> X>-15
X can be either negative (i.e. -5) or positive (i.e. 5)
NOT SUFFICIENT

Answer is (A)

Posted from my mobile device

Kinshook · Answer

Is X positive? (1) 15X > 16X 15x - 16x >0 -x>0 x<0 x is NOT positive SUFFICIENT (2) X + 15 > 0 x>-15 if x=-3<0 If x =5>0 NOT SUFFICIENT IMO A

Is X positive? (1) 15X > 16X (2) X + 15 > 0