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 |
60 cents a day |
After 5 days |
70 cents a day |
Japheth rented 5 books and was charged $25.50. How many days did he rent the books for?
$1 = 100¢
$25.50 = 25.50 x 100 = 2550¢
Amount that Japheth paid for each book
= 2550 ÷ 5
= 510¢
Amount that Japheth paid for each book for renting for the first 5 days
= 5 x 60
= 300¢
Additional amount that Japheth paid for each book for renting for additional days
= 510 - 300
= 210¢
Number of additional days that Japheth rented for each book
= 210 ÷ 70
= 3
Total number of days that Japheth rented the books
= 5 + 3
= 8
Answer(s): 8