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 2 days |
20 cents a day |
After 2 days |
30 cents a day |
Liam rented 3 books and was charged $6.60. How many days did he rent the books for?
$1 = 100¢
$6.60 = 6.60 x 100 = 660¢
Amount that Liam paid for each book
= 660 ÷ 3
= 220¢
Amount that Liam paid for each book for renting for the first 2 days
= 2 x 20
= 40¢
Additional amount that Liam paid for each book for renting for additional days
= 220 - 40
= 180¢
Number of additional days that Liam rented for each book
= 180 ÷ 30
= 6
Total number of days that Liam rented the books
= 2 + 6
= 8
Answer(s): 8