Question

Today, everytjing at a store is on sale. The store offers a 20% discount The regular price of a T-shirt is $18. What is the discount price? The discount price of a hat is $18. What is the regular price? If the regular price of an item is x dollars, what is the discount price in dollars​

Answer 1

1. The discount price of a T-shirt is $14.40

2. The regular price of a hat is $22.50

3. The discount price is y = x(0.8)

Explanation:

1.

20% = 0.2

18 times 0.2 = $3.60

18 - 3.60 = $14.40

So, the discount price of a T-shirt is $14.40

2.

100% - 20% = 80%

18 / 80 = 0.225

0.225 x 100 = $22.50

So, the regular price of a hat is $22.50

3.

Let's y represent the total cost

We have the equation

y = x(0.8)