A book rental shop rented out books and the rate of rental charges are shown in the table.
Number of days |
Rates |
After the first 5 days |
40 cents a day |
After 5 days |
90 cents a day |
Liam rented 3 books and was charged $30.30. How many days did he rent the books for?
$1 = 100¢
$30.30 = 30.30 x 100 = 3030¢
Amount that Liam paid for each book
= 3030 ÷ 3
= 1010¢
Amount that Liam paid for each book for renting for the first 5 days
= 5 x 40
= 200¢
Additional amount that Liam paid for each book for renting for additional days
= 1010 - 200
= 810¢
Number of additional days that Liam rented for each book
= 810 ÷ 90
= 9
Total number of days that Liam rented the books
= 5 + 9
= 14
Answer(s): 14