Answer:
$ 360
Explanation:
Puppy is on sale for = $ 324
It is marked down by 10% from original selling price of $ 360
Markup from the original buying cost = $ 54
Original Cost was = 360 - 54 = $ 306
$ 360 was the original price which was marked down by 10% i.e. $ 36 to the sale price of $ 324