Hi there!
To find the unit rate, we need to find the amount of money per pound of birdseed.
Since 1.25 dollars is 1/4 a pound of birdseed, we can say that
1.25 × 4 = the cost per pound of birdseed.
1.25 × 4 = 5
So, the answer is 5/1.
This unit rate represents the cost per pyjamas of birdseed.
Hope this helps!