A tube open at only one end is cut into two tubes of non equal lengths. The piece open at both ends has of fundamenal frequency of `450 Hz` and other has fundamental frequency of `675 Hz`. What is the `1^(st)` overtone frequency of the original tube.

Explanation

To find the first overtone frequency of the original tube that is open at one end, we will follow these steps:

### Step 1: Understand the fundamental frequencies of the two tubes
We have two tubes:
- Tube 1 (open at both ends) has a fundamental frequency \( f_1 = 450 \, \text{Hz} \).
- Tube 2 (open at one end) has a fundamental frequency \( f_2 = 675 \, \text{Hz} \).

### Step 2: Write the equations for the fundamental frequencies
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