Calculate the mass of the solute and water required to prepare 60 grams of a solution

Calculate the mass of the solute and water required to prepare 60 grams of a solution with a mass fraction of 15% of the substance.

Given:
m solution (in-va) = 60 g
ω (wba) = 15%

To find:
m (in-va) -?
m (water) -?

Decision:
1) Calculate the mass of the substance in the solution:
m (in-va) = ω (in-va) * m solution (in-va) / 100% = 15% * 60/100% = 9 g;
2) Calculate the mass of water in the solution:
m (water) = m solution (in-va) – m (in-va) = 60 – 9 = 51 g.

Answer: The mass of the substance in solution is 9 g; mass of water – 51 g.