Answer: The price per pound of Brand Y dog food is
Step-by-step explanation:
We have to brands of dog food (Brand X and Brand Y).
So, firstly we are told the total cost of 8 pounds of Brand X and 1 pound of Brand Y :
(1)
Then, we are told the total cost of 16 pounds of Brand X and 8 pounds of Brand Y :
(2)
Now we have two equations with two unknowns and we need to find .
Multiplying eqquation (1) by :
(3)
Adding (2) and (3):
(4)
Isolating :
(5) This is the price per pound of Brand Y dog food
