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 8 days |
30 cents a day |
After 8 days |
70 cents a day |
Jeremy rented 3 books and was charged $15.60. How many days did he rent the books for?
$1 = 100¢
$15.60 = 15.60 x 100 = 1560¢
Amount that Jeremy paid for each book
= 1560 ÷ 3
= 520¢
Amount that Jeremy paid for each book for renting for the first 8 days
= 8 x 30
= 240¢
Additional amount that Jeremy paid for each book for renting for additional days
= 520 - 240
= 280¢
Number of additional days that Jeremy rented for each book
= 280 ÷ 70
= 4
Total number of days that Jeremy rented the books
= 8 + 4
= 12
Answer(s): 12