Certainly, let’s tackle the problem step by step to reach the final solution.
### Step-by-Step Solution:
1. Determine Initial Information:
- We start with an initial number of computers.
- The initial number of computers is 9.
2. Determine the Rate of Addition:
- A certain number of computers are added each day.
- The rate at which computers are added is 5 computers per day.
3. Determine the Total Time Period:
- We are looking at the period from Monday to Thursday, which consists of 4 days.
4. Calculate the Total Number of Computers Added:
- We need to multiply the number of days by the number of computers added per day.
- Total computers added = 5 computers/day * 4 days = 20 computers.
5. Calculate the Final Total Number of Computers:
- To find the final total number of computers, we add the number of computers added over the 4 days to the initial number of computers.
- Total number of computers = initial computers + computers added
- Total number of computers = 9 + 20 = 29
### Final Results:
- Total number of computers added over 4 days: 20 computers
- Final total number of computers: 29 computers
Thus, we have derived that the number of computers added over the 4 days is 20, and the final total number of computers after those 4 days is 29.