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 2 days |
60 cents a day |
After 2 days |
70 cents a day |
Liam rented 4 books and was charged $24.40. How many days did he rent the books for?
$1 = 100¢
$24.40 = 24.40 x 100 = 2440¢
Amount that Liam paid for each book
= 2440 ÷ 4
= 610¢
Amount that Liam paid for each book for renting for the first 2 days
= 2 x 60
= 120¢
Additional amount that Liam paid for each book for renting for additional days
= 610 - 120
= 490¢
Number of additional days that Liam rented for each book
= 490 ÷ 70
= 7
Total number of days that Liam rented the books
= 2 + 7
= 9
Answer(s): 9