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 |
80 cents a day |
Fred rented 5 books and was charged $48.50. How many days did he rent the books for?
$1 = 100¢
$48.50 = 48.50 x 100 = 4850¢
Amount that Fred paid for each book
= 4850 ÷ 5
= 970¢
Amount that Fred paid for each book for renting for the first 5 days
= 5 x 50
= 250¢
Additional amount that Fred paid for each book for renting for additional days
= 970 - 250
= 720¢
Number of additional days that Fred rented for each book
= 720 ÷ 80
= 9
Total number of days that Fred rented the books
= 5 + 9
= 14
Answer(s): 14