How do I find the total mass of sample in a solution?

I have:
Volume of the solvent
Mass of the solvent
Mass of sample added

I do not know what the sample is.


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  1. The mass of sample IN the solution is the mass of sample added. The total mass of sample and solution is mass of sample + mass solvent.
    It's easier to answers REAL question (with numbers) rather than general ones.

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