# Concentration 4419

We added 300 g of water to a 400 g of salt solution. This step reduces the solution's concentration by 5%. How much water did the original solution contain, and what was its concentration?

## Correct answer:

**Showing 1 comment:**

**Emcl**

I think this answer is wrong, since original solution has 400g, how can it has 1406g water. we can set original concentration is x,then 400x/(300+400)=x-5%, then x is 11.67%.

Tips for related online calculators

Are you looking for help with calculating roots of a quadratic equation?

Our percentage calculator will help you quickly calculate various typical tasks with percentages.

Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

Our percentage calculator will help you quickly calculate various typical tasks with percentages.

Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

### You need to know the following knowledge to solve this word math problem:

### Units of physical quantities:

#### Themes, topics:

### Grade of the word problem:

## Related math problems and questions:

- Concentration 27551

We need a 4% solution of H2O2 (hydrogen peroxide) for the disinfection solution. We only have a 40% solution available. How much water do we need to add to 100ml of the original solution to obtain the desired concentration? - Concentration 17633

If we mix 4l and 6l of differently concentrated salt solutions, we get a 12% solution. If we use 6l of the first and 4l of the second solution, we get a 13% solution. What is the concentration of each solution? - Acid solution

By adding 250 grams of a 96% sulfuric acid solution to its 3% solution, we changed its initial concentration to 25%. How many grams of 3% of the acid were used for dilution? - Water solution

How many grams of salt should we dissolve in 400 g of water to get a 20% solution?

- Distilled 83093

The 50% salt solution must be diluted with distilled water to make 20 liters of 35% solution. How many liters of original solution and how many liters of water do we need? - Solution 4284

How many grams of table salt and water do we weigh to prepare 500 g of a 15% solution? - Copper sulphate

How much g of water do we have to add to 240 g of an 84% CuSO4 solution to produce a 60% solution? (Express the mass of crystalline CuSO4 in the original solution and the resulting solution and compare them. )