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 6 days |
50 cents a day |
After 6 days |
90 cents a day |
Harry rented 3 books and was charged $30.60. How many days did he rent the books for?
$1 = 100¢
$30.60 = 30.60 x 100 = 3060¢
Amount that Harry paid for each book
= 3060 ÷ 3
= 1020¢
Amount that Harry paid for each book for renting for the first 6 days
= 6 x 50
= 300¢
Additional amount that Harry paid for each book for renting for additional days
= 1020 - 300
= 720¢
Number of additional days that Harry rented for each book
= 720 ÷ 90
= 8
Total number of days that Harry rented the books
= 6 + 8
= 14
Answer(s): 14