Question

Equal volume of water and a liquid of relative density 1.5 are mixed together. Find the relative density of the mixture​

Answer 1

Answer: 1.25

Explanation:

Take V volume of water.

So, we have $V\rho$ mass of water.

Take V volume of the liquid as well (we're instructed to do that).

So, $1.5\rho V$ mass of liquid.

Total mass = $2.5\rho V$, and total volume = $2V$.

So, final relative density = 1.25 (total mass / (total volume * density of water))