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 4 days |
50 cents a day |
After 4 days |
60 cents a day |
Ryan rented 4 books and was charged $27.20. How many days did he rent the books for?
$1 = 100¢
$27.20 = 27.20 x 100 = 2720¢
Amount that Ryan paid for each book
= 2720 ÷ 4
= 680¢
Amount that Ryan paid for each book for renting for the first 4 days
= 4 x 50
= 200¢
Additional amount that Ryan paid for each book for renting for additional days
= 680 - 200
= 480¢
Number of additional days that Ryan rented for each book
= 480 ÷ 60
= 8
Total number of days that Ryan rented the books
= 4 + 8
= 12
Answer(s): 12