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 |
40 cents a day |
After 4 days |
50 cents a day |
Reggie rented 3 books and was charged $15.30. How many days did he rent the books for?
$1 = 100¢
$15.30 = 15.30 x 100 = 1530¢
Amount that Reggie paid for each book
= 1530 ÷ 3
= 510¢
Amount that Reggie paid for each book for renting for the first 4 days
= 4 x 40
= 160¢
Additional amount that Reggie paid for each book for renting for additional days
= 510 - 160
= 350¢
Number of additional days that Reggie rented for each book
= 350 ÷ 50
= 7
Total number of days that Reggie rented the books
= 4 + 7
= 11
Answer(s): 11