Answer:
31.25 lbs of Colcannon
Step-by-step explanation:
What is Colcannon?
Colcannon is a traditional Irish dish made by combining soft, buttery mashed potatoes with cooked kale or cabbage. Though cabbage is more commonly used today, kale is the older and more traditional ingredient stirred into the potato mash.
Now for the math
It takes 16 portions at 5 ounces each from 4 pounds of potatoes
16 portions at 5 ounces each = 16 x 5 = 80 ounces and that is the yield from 4 lbs of potatoes
1 lb = 16 ounces so 80 ounces = 80/16 = 5 pounds
So 5 pounds of Colcannon can be made from 4 pounds of potatotes
(The rest of the weight comes from crushed kale or cabbage)
We can derive a proportionality relationship thus
4 lbs of potatoes yield 5 pounds of Colcannon
25 lbs of potatoes will yield:
25/4 * 5
= 125/4 lbs of Colcannon
= 31.25 lbs of Colcannon
