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 |
Eric rented 2 books and was charged $18.60. How many days did he rent the books for?
$1 = 100¢
$18.60 = 18.60 x 100 = 1860¢
Amount that Eric paid for each book
= 1860 ÷ 2
= 930¢
Amount that Eric paid for each book for renting for the first 5 days
= 5 x 60
= 300¢
Additional amount that Eric paid for each book for renting for additional days
= 930 - 300
= 630¢
Number of additional days that Eric rented for each book
= 630 ÷ 70
= 9
Total number of days that Eric rented the books
= 5 + 9
= 14
Answer(s): 14