To determine how many customers the cashier can ring up in eight hours, we need to follow these steps:
1. Identify the number of customers rung up per hour: The cashier rings up 15 customers per hour.
2. Determine the number of hours worked: The cashier works for 8 hours.
3. Calculate the total number of customers in eight hours:
- Multiply the number of customers rung up per hour by the number of hours.
- Thus, [tex]\( 15 \text{ customers/hour} \times 8 \text{ hours} \)[/tex].
4. Perform the multiplication: [tex]\( 15 \times 8 = 120 \)[/tex].
So, the cashier can ring up 120 customers in eight hours.
Hence, the correct answer is 120.
