**Calculating the Number of Computers Required**

To determine the number of computers required for a given number of students, we need to consider the ratio of computers to students. In this case, the ratio is 4 computers for every 8 students. We can use this ratio to calculate the number of computers needed for a different number of students, such as 40 students.

**Step 1: Determine the Ratio**

The given ratio is 4 computers for every 8 students. This means that for every group of 8 students, there are 4 computers available.

**Step 2: Determine the Number of Groups**

To determine the number of groups of 8 students in a given number of students, we divide the total number of students by 8.

In this case, we have 40 students, so we divide 40 by 8:

40 / 8 = 5

Therefore, we have 5 groups of 8 students.

**Step 3: Calculate the Number of Computers**

Now that we know there are 5 groups of 8 students, we can calculate the number of computers required.

Since each group of 8 students requires 4 computers, we multiply the number of groups by the number of computers per group:

5 groups * 4 computers = 20 computers

Therefore, for 40 students, we would need 20 computers.

**In conclusion, for 40 students, we would require 20 computers.**

This calculation is based on the given ratio of 4 computers for every 8 students. By dividing the total number of students by 8, we determine the number of groups. Then, by multiplying the number of groups by the number of computers per group, we calculate the total number of computers required.