x and y is y

[sanju09]

For the non zero integers x and y, what is the value of {(x/y) + (y/x)}?

(1) x, y are roots of the equation 16 t^2 – 24 t + 9.

(2) The least common multiple of x and y is y, the same as their greatest common divisor.

MBM

[eyoussef]

I think the answer to this question is D
statment 1: by examining the discriminant of the given equation.. it will be equal to 0; which means one single repeated root, in other words, x=y

statement 2: also states that x=y because for the GCD both numbers to be equal to the HCF, they have to be equal

Please correct me if i'm wrong

[2010gmat]

IMO B

1st does not give integer values for x and y..

[TryHarder]

I am confused about the justification to say that (1) in Insufficient.

Should'nt we say that 16t^2 -24t + 9 =0 has a singular non-integer root t=3/4 and hence the values of x and y remain undecided?

[subha_sri8]

On resolving the first equation we get the roots as 12 and 12.
Therefore statement 1 is sufficient.

Also from statement 2 if LCD = GCD then the numbers must be equal so we can calculate the value of the expression.

therefore the answer is D.

Please post the OA?

[Vemuri]

IMO D.

The first statement essentially leads to the root 3/4, which is the same for x & y. The second statement is also saying that the roots are equal by telling us that the LCM & GCD are the same.

[sacx]

shouldn't the question say non-zero non-integers

Stmt I gives us x = y = 3/4, and hence the value of the expression 2
Stmt II says x = y, hence value of the expression = 2

D