The average would be 15% of the original costs of the bill should be a added as a tip
84÷54=1.5555555 recurring meaning B is the answer.
Answer:
6 books for $21
Step-by-step explanation:
In order to find the better deal you need to know what the cost is for 1 book corresponding to each deal, you do this by dividing the cost of the books by the total amount of books.
21/6 = $3.5
15/4 = $3.75
You can get books for a better deal by buying 6 books for $21