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 8 days |
50 cents a day |
After 8 days |
60 cents a day |
Owen rented 4 books and was charged $25.60. How many days did he rent the books for?
$1 = 100¢
$25.60 = 25.60 x 100 = 2560¢
Amount that Owen paid for each book
= 2560 ÷ 4
= 640¢
Amount that Owen paid for each book for renting for the first 8 days
= 8 x 50
= 400¢
Additional amount that Owen paid for each book for renting for additional days
= 640 - 400
= 240¢
Number of additional days that Owen rented for each book
= 240 ÷ 60
= 4
Total number of days that Owen rented the books
= 8 + 4
= 12
Answer(s): 12