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 |
60 cents a day |
After 5 days |
70 cents a day |
Dylan rented 3 books and was charged $23.70. How many days did he rent the books for?
$1 = 100¢
$23.70 = 23.70 x 100 = 2370¢
Amount that Dylan paid for each book
= 2370 ÷ 3
= 790¢
Amount that Dylan paid for each book for renting for the first 5 days
= 5 x 60
= 300¢
Additional amount that Dylan paid for each book for renting for additional days
= 790 - 300
= 490¢
Number of additional days that Dylan rented for each book
= 490 ÷ 70
= 7
Total number of days that Dylan rented the books
= 5 + 7
= 12
Answer(s): 12