A library charges $0.10 a day in late fees for each book Sydney returned 4 books that were 17days late and 3 books that were 23 days late. How much did Sydney owe in late fees?

Answer: $13.70

Step-by-step explanation:

.10 * 17 = 1.7, because $.10 is charged for everyday the book is late and the books were 17 days late.

1.7 * 4 = 6.8, because there were four books that were 17 days late.

.10 * 23 = 2.3, because $.10 is charged for everyday the book is late and the books were 23 days late.

2.3 * 3 = 6.9, because there were three books that were 23 days late.

6.8+6.9 = 13.70 is the amount of money Sydney had to pay the library for her late books.