what is the cost of 3 notebooks at 20% discount, a binder

at 25% discount, and 2 pens.

1 notebook: $1.79
1 pen: $2.89
1 Binder: $3.19

3*1.79*(1-.20) + 1*3.19*(1-.25) + 2*2.89 = 12.47

To calculate the total cost, we need to find the discounted price for each item and then sum them up.

Let's start with the notebooks. We have three notebooks, and each notebook has a price of $1.79. Now, since there is a 20% discount, we need to calculate the discounted price.

To calculate the discounted price, we can use the formula: Discounted price = Original price - (Original price * Discount percentage)

For the notebooks, the original price is $1.79, and the discount percentage is 20%.

Discounted price of 1 notebook = $1.79 - ($1.79 * 0.20)

Now, we can calculate the total cost of the notebooks as:

Total cost of notebooks = Discounted price of 1 notebook * Number of notebooks

Next, let's calculate the discounted price for the binder. We have a binder with a price of $3.19, and there is a 25% discount.

Discounted price of the binder = $3.19 - ($3.19 * 0.25)

Now, we can calculate the total cost of the binder.

Finally, let's calculate the cost of the pens. We have 2 pens, and each pen has a price of $2.89. We don't have any discount on the pens.

Total cost of pens = Price of 1 pen * Number of pens

To find the total cost, we need to sum up the costs of the notebooks, binder, and pens.

Total cost = Total cost of notebooks + Total cost of binder + Total cost of pens

Now, you can substitute the values into the formulas and calculate the total cost.