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 |
20 cents a day |
After 8 days |
40 cents a day |
Jenson rented 2 books and was charged $4.80. How many days did he rent the books for?
$1 = 100¢
$4.80 = 4.80 x 100 = 480¢
Amount that Jenson paid for each book
= 480 ÷ 2
= 240¢
Amount that Jenson paid for each book for renting for the first 8 days
= 8 x 20
= 160¢
Additional amount that Jenson paid for each book for renting for additional days
= 240 - 160
= 80¢
Number of additional days that Jenson rented for each book
= 80 ÷ 40
= 2
Total number of days that Jenson rented the books
= 8 + 2
= 10
Answer(s): 10