Question
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 4 days 30 cents a day
After 4 days 40 cents a day

Valen rented 3 books and was charged $10.80. How many days did he rent the books for?
2 m

Click button first when a symbol is required. X

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 4 days 30 cents a day
After 4 days 40 cents a day

Valen rented 3 books and was charged $10.80. How many days did he rent the books for?