Workkeys Math Practice Test 2025 - Free Math Practice Questions and Study Guide

Question: 1 / 400

At a city water purification plant, how many ounces of release agent should be mixed with 32 ounces of water if the ratio is 8:1?

3 ounces

4 ounces

To determine how many ounces of release agent should be mixed with 32 ounces of water using the ratio of 8:1, we first need to understand what this ratio signifies. In a ratio of 8:1, for every 8 parts of the first substance (in this case, the release agent), there is 1 part of the second substance (water).

Since the amount of water is given as 32 ounces, we can set up a proportion based on the ratio. The total number of parts in the ratio is 8 (for the release agent) + 1 (for the water) = 9 parts.

Now, each part corresponds to:

\[

\text{Total amount of water} = 32 \text{ ounces}

\]

We calculate the amount represented by each part:

\[

\text{Each part} = \frac{32 \text{ ounces}}{1} = 32 \text{ ounces of water}

\]

Now, since we know there are 8 parts of release agent, the total amount of release agent needed is:

\[

\text{Release agent} = 8 \times \frac{32}{1} = 8 \text{ parts}

\]

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5 ounces

6 ounces

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