To find the number of students when the number of computers is 45, we can set up a proportion based on the ratio of computers to students.
Given the information:
- When there are 260 students, there are 39 computers.
We can write the ratio of computers to students as: \[ \frac{\text{Number of Computers}}{\text{Number of Students}} = \frac{39}{260} \]
Now, we need to find the number of students (let's call this \( x \)) when the number of computers is 45: \[ \frac{45}{x} \]
Setting these two ratios equal to each other gives us: \[ \frac{39}{260} = \frac{45}{x} \]
Cross-multiplying to solve for \( x \): \[ 39x = 45 \cdot 260 \] \[ 39x = 11700 \] \[ x = \frac{11700}{39} \]
Now, calculating \( \frac{11700}{39} \): \[ x = 300 \]
Thus, the number of students when the number of computers is 45 is 300. Therefore, the answer is:
C 300
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