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 3 days |
60 cents a day |
After 3 days |
90 cents a day |
Bryan rented 5 books and was charged $22.50. How many days did he rent the books for?
$1 = 100¢
$22.50 = 22.50 x 100 = 2250¢
Amount that Bryan paid for each book
= 2250 ÷ 5
= 450¢
Amount that Bryan paid for each book for renting for the first 3 days
= 3 x 60
= 180¢
Additional amount that Bryan paid for each book for renting for additional days
= 450 - 180
= 270¢
Number of additional days that Bryan rented for each book
= 270 ÷ 90
= 3
Total number of days that Bryan rented the books
= 3 + 3
= 6
Answer(s): 6