How many grams of salt and water should be taken to prepare 60-g 15% solution.

m (salt) = 9 g, m (water) = 51 g.
Explanation of the solution to the problem: to solve this problem, you must use the following formula:
w = m (solv.v-va) / m (solution), where w is the mass fraction of the solute in the solution, m (solv.v-va) is the mass of the solute, m (solution) is the mass of the solution …
First you need to find the mass of the solute (salt), for this, we multiply the mass of the solution by the mass fraction of the salt in the solution: m (salt) = w * m (solution) = 0.15 * 60 = 9 g.
Next, we find the mass of water: m (water) = 60 – 9 = 51 g