### Instruction: Let $f$ be a function satisfying $f(xy) = f(x)/y$ for all positive real numbers $x$ and $y$. If $f(500) = 3$, what is the value of $f(600)$?### Response: So the function $f$ satisfies $f(xy) = f(x)/y$. Let's plug in $x=500$ and $y=1.2$.
Then we get $f(600) = f(500)/1.2$.
But we know $f(500) = 3$, so $f(600) = 3/1.2$.