Question

в 35 процентном растворе содержится 42 кг соли .какова масса раствора

Answer 1

Если 35 процентов  это соль то 
$\frac{42}{0.35}=120$

Answer 2

Calculating the Mass of the Solution

To calculate the mass of the solution, we can use the formula:

Mass of solution = Mass of solute + Mass of solvent

Given that the 35% solution contains 42 kg of salt (solute), we can calculate the mass of the solution using the formula.

Mass of solute (salt) = 42 kg

Percentage of solution = 35%

Using the formula, we can calculate the mass of the solution.

Mass of solution = (Mass of solute) / (Percentage of solution)

Mass of solution = 42 kg / 0.35 = 120 kg

So, the mass of the 35% solution is 120 kg.