If 3x=6y=z, what is x+y, in terms of z?  Options
A) z/2  B) 2z  C) z/3  D) 3z/5  E) z/9
3x=6y=z   x = z/3   and y = z/6   x+y = z/3 + z/6 = z/2   z/2nswer is z/2
<result>A</result>
If 3x=6y=z, what is x+y, in terms of z?