Question

Walter is back in his lab doing experiments.

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​For his new experiment, he needs 22 parts of water for every 88 parts of salt.

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​If he has 7 . 57.5 parts of water, how many parts of salt does he need?

Answer 1

We will see that for 7.5 parts of water he needs 30 parts of salt.

How to work with ratios?

Here we know that Walter needs 2 parts of water for every 8 parts of salt, this is the relation that we will use.

We also know that he has 7.5 parts of water.

If we divide that into groups of 2 parts, we get:

(7.5)/2 = 3.75

This means that we have 3.75 groups of 2 parts of water.

And for every 2 parts of water, we need 8 of salt, then the total salt needed is:

3.75*(8 parts) = 30

This means that for 7.5 parts of water he needs 30 parts of salt.

If you want to learn more about ratios, you can read:

https://brainly.com/question/2784798