Question

сколько литров воды надо добавить воды к 40 л 80_ чтобы он стал 60%

Answer 1

40-80%
х-60%
х= 40*60/80=60/2=30

Answer 2

Calculating the Amount of Water Needed

To calculate the amount of water needed to make a 40 L solution 60% water, we can use the following formula:

Initial amount of water + x / Total volume + x = Desired percentage

Where: - Initial amount of water = 40 L - Total volume = 40 L - Desired percentage = 60%

Using the formula, we can solve for x to find the amount of water needed to achieve a 60% water solution.

The calculation involves the use of the given formula and the initial amount of water to determine the additional amount required. The result will provide the exact quantity of water needed to reach the desired 60% concentration.

The specific calculation and the result are as follows:

x = (Initial amount of water * Desired percentage) / (100 - Desired percentage).

Substituting the given values: x = (40 * 60) / (100 - 60)

x = (40 * 60) / 40

x = 24

Therefore, 24 liters of water need to be added to the 40 L solution to make it 60% water.

This calculation is based on the provided information and the formula for calculating the amount of water needed to achieve a specific percentage in a solution