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 |
50 cents a day |
After 5 days |
60 cents a day |
Ethan rented 5 books and was charged $24.50. How many days did he rent the books for?
$1 = 100¢
$24.50 = 24.50 x 100 = 2450¢
Amount that Ethan paid for each book
= 2450 ÷ 5
= 490¢
Amount that Ethan paid for each book for renting for the first 5 days
= 5 x 50
= 250¢
Additional amount that Ethan paid for each book for renting for additional days
= 490 - 250
= 240¢
Number of additional days that Ethan rented for each book
= 240 ÷ 60
= 4
Total number of days that Ethan rented the books
= 5 + 4
= 9
Answer(s): 9