Lilly had two over-due books from the school library. Each book cost $1.49 per day they

Question

were late. Lilly returned the over-due books three days late.
Which equation represents Lilly's library fees?
a) 1.49+1.49=3.98
b) 2(1.49)=2.98
c) 3(1.49+1.49)=8.94
d)1.49+1.49+1.49=4.47

Answer 1

To determine the correct equation that represents Lilly's library fees for the two overdue books, we need to consider the following:

• Each book costs $1.49 per day they are late.
• There are two books.
• The overdue period was three days.

Calculating the total fee can be broken down as:

1. For one book, the fee for three days late is \(3 \times 1.49\).
2. Since there are two books, the total fee will be \(2 \times (3 \times 1.49)\) or \(3 \times 2 \times 1.49\).

This leads us to find:

• The cost for one book being three days late: \(3 \times 1.49\) = \(4.47\) for one book.
• Therefore, for two books: \(2 \times 4.47 = 8.94\).

However, when considering the provided equations, let’s analyze them:

a) \(1.49 + 1.49 = 3.98\) (Incorrect, only for 2 days for one book). b) \(2(1.49) = 2.98\) (Incorrect, only calculates the fee for 2 books for 1-day late). c) \(3(1.49 + 1.49) = 8.94\) (This is correct: \(3(2 \times 1.49)\)). d) \(1.49 + 1.49 + 1.49 = 4.47\) (This is correct for one book but does not account for the two).

The correct equation that accurately represents Lilly's library fees for three days late for two books is:

c) \(3(1.49 + 1.49) = 8.94\).