Answer:
$10.
Step-by-step explanation:
Let x represent the original cost of bag of cat food.
We have been given that a pet store owner set the price of a bag of cat food at 50% above the cost. So the cost of cat food would be x plus 50% of x.
We are further told that the price was reduced by 20%, when it did not sell. So price of cat food after reduction would be minus 20 percent of .
Since price after reduction was $12, so we will equate with 12 as:
Therefore, the original cost of cat food was $10.
