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 |
80 cents a day |
Reggie rented 4 books and was charged $20.80. How many days did he rent the books for?
$1 = 100¢
$20.80 = 20.80 x 100 = 2080¢
Amount that Reggie paid for each book
= 2080 ÷ 4
= 520¢
Amount that Reggie paid for each book for renting for the first 4 days
= 4 x 50
= 200¢
Additional amount that Reggie paid for each book for renting for additional days
= 520 - 200
= 320¢
Number of additional days that Reggie rented for each book
= 320 ÷ 80
= 4
Total number of days that Reggie rented the books
= 4 + 4
= 8
Answer(s): 8