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 9 days |
50 cents a day |
After 9 days |
70 cents a day |
Reggie rented 4 books and was charged $37.60. How many days did he rent the books for?
$1 = 100¢
$37.60 = 37.60 x 100 = 3760¢
Amount that Reggie paid for each book
= 3760 ÷ 4
= 940¢
Amount that Reggie paid for each book for renting for the first 9 days
= 9 x 50
= 450¢
Additional amount that Reggie paid for each book for renting for additional days
= 940 - 450
= 490¢
Number of additional days that Reggie rented for each book
= 490 ÷ 70
= 7
Total number of days that Reggie rented the books
= 9 + 7
= 16
Answer(s): 16