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 |
40 cents a day |
After 5 days |
90 cents a day |
Zane rented 3 books and was charged $14.10. How many days did he rent the books for?
$1 = 100¢
$14.10 = 14.10 x 100 = 1410¢
Amount that Zane paid for each book
= 1410 ÷ 3
= 470¢
Amount that Zane paid for each book for renting for the first 5 days
= 5 x 40
= 200¢
Additional amount that Zane paid for each book for renting for additional days
= 470 - 200
= 270¢
Number of additional days that Zane rented for each book
= 270 ÷ 90
= 3
Total number of days that Zane rented the books
= 5 + 3
= 8
Answer(s): 8