You are buying potato chips at the grocery store. You have a manufacturer’s coupon for $1.00 off and the store is offering 20% off if you buy 2 bags. You decide to buy two bags of potato chips. How do you compute your final cost?

Question

(1 point)
Responses

Subtract $1.00 off each bag and then multiply by .20.
Subtract $1.00 off each bag and then multiply by .20.

Multiply each bag by .20, subtract $1.00 off of each bag, and then add them together.
Multiply each bag by .20, subtract $1.00 off of each bag, and then add them together.

Add the two bags together, multiply by .80, and then subtract $1.00.
Add the two bags together, multiply by .80, and then subtract $1.00.

Subtract $1.00 from the first bag, add them together, and then multiply by .80.
Subtract $1.00 from the first bag, add them together, and then multiply by .80.

Answer 1

To compute your final cost when buying two bags of potato chips with a $1.00 manufacturer’s coupon and a 20% discount offered by the store for purchasing 2 bags, you would follow these steps:

1. First, let's assume the price of each bag is \( P \).

2. You buy 2 bags, so the total price before any discounts is \( 2P \).

3. The store offers a 20% discount if you buy 2 bags, which means you will pay 80% of the total price. Therefore, after applying the 20% discount, the total cost becomes: \[ 2P \times 0.80 = 1.6P \]

4. Now, you will apply the $1.00 coupon. So, you subtract $1.00 from the total cost after the discount: \[ 1.6P - 1.00 \]

Thus, the correct way to compute the final cost is to add the two bags together, multiply by .80, and then subtract $1.00.

Therefore, the correct response is: Add the two bags together, multiply by .80, and then subtract $1.00.