=> Condition 1)

If x = y = 12, then the median of them is 12.

If x < y, then the median of them 12, since x < 12 < y.

If x > y, then the median of them 12, since y < 12 < x.

This is sufficient.

Condition 2)

Since we don’t know x, we don’t identify their median.

This is not sufficient.

Ans: A

_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare

The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.

"Only $99 for 3 month Online Course"

"Free Resources-30 day online access & Diagnostic Test"

"Unlimited Access to over 120 free video lessons - try it yourself"