Original price? percent of discount: 80% sales price: $90

$450

Explanation:

Since the item has a discount for 80%, that means the sales price is equivalent to 20% of the original price. So, to get the original price, you will multiply the sales price ($90) by five, and then you will have your original price ($450).

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct