Answer: 8 cupcakes per box
Step-by-step explanation: "Per box" means in 1 box, so we can rewrite the given statement using fractions as
48 cupcakes/6 boxes = __ cupcakes/1 box.
To find out what goes in the blank, notice that we
have a 1 in the denominator of our second fraction.
So we want to find a fraction that is equivalent
to 48/6 that has a 1 in the denominator.
If we divide the numerator and denominator of 48/6 by 6,
we get the equivalent fraction 8/1 or 8 cupcakes/1 box.
So now we have 8 cupcakes/1 box = __cupcakes/1 box.
So an 8 must go in the blank which means that the unit rate
for 48 cupcakes in 6 boxes is 8 cupcakes per box.