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 6 days |
20 cents a day |
After 6 days |
60 cents a day |
Owen rented 3 books and was charged $14.40. How many days did he rent the books for?
$1 = 100¢
$14.40 = 14.40 x 100 = 1440¢
Amount that Owen paid for each book
= 1440 ÷ 3
= 480¢
Amount that Owen paid for each book for renting for the first 6 days
= 6 x 20
= 120¢
Additional amount that Owen paid for each book for renting for additional days
= 480 - 120
= 360¢
Number of additional days that Owen rented for each book
= 360 ÷ 60
= 6
Total number of days that Owen rented the books
= 6 + 6
= 12
Answer(s): 12