If the book fair had a sale where 6 books were $20.46 then if you wanted 7 books how much money would you need

If you wanted to buy 7 books you would need $23.87.

Step-by-step explanation:

Divide the total of the six books by their price, ($20.46/6), you would get that the individual price of each book is $3.41. Lastly, you multiply that number by 7 because that's how many books you need (7 x $3.41). You end up with $23.87