In 170 g of water, 30 g of salt was dissolved, calculate the mass of the resulting solution

In 170 g of water, 30 g of salt was dissolved, calculate the mass of the resulting solution and the mass fraction of the solute in water

Given:
m (H2O) = 170 g
m (salt) = 30 g

To find:
m solution (salt) -?
ω (salt) -?

Decision:
1) m solution (salt) = m (salt) + m (H2O) = 30 + 170 = 200 g;
6) ω (salt) = m (salt) * 100% / m solution (salt) = 30 * 100% / 200 = 15%.

Answer: The mass fraction of salt is 15%.