In what proportion should you combine a 2:5 soaking solution and distilled water to create a 300 ml of a 1:20 solution?

orig ratio: 2.5 final ratio 20

so you want to dilute it 20/2.5=8 times
which means you need one part original, and 7 parts water.

one part=300ml/8=you do it.
7 parts= 300ml*7/8

To determine the proportion in which you should combine the 2:5 soaking solution and distilled water, we need to calculate the amount of each ingredient required.

Let's break down the information provided:

1. We need to create a 300 ml solution.
2. The desired concentration is 1:20.
3. We have a 2:5 soaking solution.

To create a 1:20 solution, it means that for every 1 part of the soaking solution, we need to add 20 parts of water.

Step 1: Calculate the volume of soaking solution required.
Since the desired volume is 300 ml, we need to find 1/21st of this volume for the soaking solution.

Volume of soaking solution = (1/21) * 300 ml
Volume of soaking solution = 300 ml / 21
Volume of soaking solution ≈ 14.29 ml (rounded to 2 decimal places)

Step 2: Calculate the volume of water required.
To find the volume of water required, we multiply the volume of soaking solution by the ratio of water to soaking solution.

Volume of water = Volume of soaking solution * (20/1)
Volume of water = 14.29 ml * 20
Volume of water = 285.71 ml (rounded to 2 decimal places)

Step 3: Combine the volumes of soaking solution and water.
To achieve the desired 1:20 ratio, combine 14.29 ml of the soaking solution and 285.71 ml of water.

Therefore, you should combine approximately 14.29 ml of the 2:5 soaking solution with 285.71 ml of distilled water to create a 300 ml solution with a concentration of 1:20.