Two sound waves of lengths 9 and 10 metres produce 34 beats in 9 seconds. Find the velocity of sound.

Explanation

To solve the problem step by step, we need to find the velocity of sound based on the given wavelengths and the number of beats produced.

### Step 1: Understand the relationship between frequency, wavelength, and velocity
The velocity (v) of a wave is given by the formula:
\[ v = f \cdot \lambda \]
where \( f \) is the frequency and \( \lambda \) is the wavelength.

### Step 2: Identify the given data
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