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 7 days |
50 cents a day |
After 7 days |
80 cents a day |
Asher rented 5 books and was charged $49.50. How many days did he rent the books for?
$1 = 100¢
$49.50 = 49.50 x 100 = 4950¢
Amount that Asher paid for each book
= 4950 ÷ 5
= 990¢
Amount that Asher paid for each book for renting for the first 7 days
= 7 x 50
= 350¢
Additional amount that Asher paid for each book for renting for additional days
= 990 - 350
= 640¢
Number of additional days that Asher rented for each book
= 640 ÷ 80
= 8
Total number of days that Asher rented the books
= 7 + 8
= 15
Answer(s): 15