Abhishek009 wrote:

Bunuel wrote:

If a/b = 1/2, then the numerical value of which of the following expressions cannot be determined?

A. 2a/b

B. (a + b)/a

C. (a + 1)/(b + 1)

D. (a - 3b)/(a + b)

E. 6a – 3b

Plug in the value of a = 1 and b = 2

A. 2a/b => 2/1 = 1

B. (a + b)/a => 3/1 =3C. (a + 1)/(b + 1) = 2/3D. (a - 3b)/(a + b) => -5/3E. 6a – 3b => 6 - 6 =0

I am getting both C and D , someone plz confirm where i am getting wrong....

Hi

Abhishek009I think the issue might be because we can't take values of a and b here .

a=k

b=2k

k can any non zero number

if we take a= 2 and b=4

then (a + 1)/(b + 1) = (2+1)/(4+1) = 3/5

But for other options we will get the same answer. In my opinion the issue is due to fact that except option C , either we take the ratio of a and b or are

performing some operation on a and b ( in numerator or denominator) and then we take the ratio .

A. 2a/b = 2* 2/4= 1

B. (a + b)/a = (2+4)/2 = 6/2=3

D.(a - 3b)/(a + b) = (2- 3*4)/(2+4) = (-10)/6 = -5/3

E. 6a- 3b = 6*2 - 3*4= 0

Hope it helps!!

_________________

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford

The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long

+1 Kudos if you find this post helpful