Problema Solution
A library charges $ 2.55 as a fine for the first three days on overdue books. For each additional day after three days, a fixed amount is charged as a fine. Maria and Nicole borrow one book each and return it 18 days after the due date. They pay $50.10 as the total amount for the fine.
What is the fixed amount the library charges as a fine for each day, three days after the due date?
Answer provided by our tutors
let
x = the fixed amount the library charges as a fine for each day, three days after the due date
2.55 + (18 - 3)*x = 50.10
by solving the equations we find
x = $3.17
$3.17 is the fixed amount the library charges as a fine for each day, three days after the due date.