Equal masses of two substance of densities `rho_(1) and rho_(2)` are mixed together. What is the density of the mixture?

Explanation

To find the density of a mixture of two substances with equal masses and densities \( \rho_1 \) and \( \rho_2 \), we can follow these steps:

### Step 1: Define the Masses
Let the mass of each substance be \( m \). Since we have equal masses, the total mass of the mixture is:
\[ \text{Total mass} = m + m = 2m \]

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