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 |
20 cents a day |
After 4 days |
50 cents a day |
Reggie rented 2 books and was charged $7.60. How many days did he rent the books for?
$1 = 100¢
$7.60 = 7.60 x 100 = 760¢
Amount that Reggie paid for each book
= 760 ÷ 2
= 380¢
Amount that Reggie paid for each book for renting for the first 4 days
= 4 x 20
= 80¢
Additional amount that Reggie paid for each book for renting for additional days
= 380 - 80
= 300¢
Number of additional days that Reggie rented for each book
= 300 ÷ 50
= 6
Total number of days that Reggie rented the books
= 4 + 6
= 10
Answer(s): 10