Answer :
Six books at 8 dollars each is equivalent to $48.00
You are only paying 80% of that cost (100%-20%)
Therefore you are multiplying 48 by .8
Your answer should be equal to $38.40
You are only paying 80% of that cost (100%-20%)
Therefore you are multiplying 48 by .8
Your answer should be equal to $38.40
Answer: Alex paid $38.4 for the books.
Step-by-step explanation: Given that Alex bought six books priced at $8 each and he got a discount of 20% off the total cost.
We are to find the amount paid by Alex for the books.
We have
Price of 1 book = $8.
So, price of 6 books = $ (8 × 6) = $ 48.
After a discount of 20%, the cost of 6 books will be
[tex]C_d\\\\=48-20\%\times48\\\\\\=48-\dfrac{20}{100}\times48\\\\=48-\dfrac{48}{5}\\\\=48-9.6\\\\=38.4.[/tex]
Thus, Alex paid $38.4 for the books.