Need Clarifications
What is the value of 2x + 2Y?
a. 3x + 5y = 60
b. 5x+3y = 68
OA: C
I factorised 60 in (a.) and got 2 x 2 x 3 x 5
This implies x and y have to take value 2 for this equation to be true.
(b) not sufficient
Hence (A) is sufficient.
Can you tell me where am I going wrong?
Hi Chaitanya,
I dont know why you have done factorization?
If the question talks about X and Y integers, then it make sense to factorize.
we have to find 2x+2Y ?
to find this, either we need X and Y values or two linear equations or equation similar to 2X+2Y.
Statement I is insufficient:
X and Y could be anything, like X could be zero or Y = 12 or X = 1 or Y = 11.4
So insufficient.
Similarly, Statement II is insufficient.
But both taken together, we can solve for X and Y.
So the answer is C.
Hope this is clear.
