If xy > 0, 1/x + 1/y = 6, and 1/xy = 12, then (x+y)/6 = ?
Choose the correct choice:
A) 1/12
B) 1/6
C) 1/5
D) 5
E) 6
(1/X+1/Y)=6 canbe solved as {(x+y)/xy}=12. Substituting for 1/xy=12, we get   x+y=6/12   ==&gt; (x+y)/6= 6/(12*6)=1/12.   1/12
<result>A</result>
If xy > 0, 1/x + 1/y = 6, and 1/xy = 12, then (x+y)/6 = ?