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Swimming Pool Manager

Real-Life Activities

Real-Life Math

You are a swimming pool manager at the community pool. Every morning when you come into work, it is your job to test the pH level of the pool to ensure it meets the proper guidelines. The water should not be too acidic or too alkaline.

The pool is quite large. It holds about 1,412,640 cubic feet of water. Even so, it doesn't take much to set the pH balance off. That's why you need to monitor the levels carefully.

After taking 3 different samples, you can tell that the pH level of the pool is low. Regulations require the level to be at 7.2. The water you tested shows the level is at 6.4.

By adding chlorine to the pool, you will be able to bring the pH level up to the standard 7.2. Every 353 cubic feet of water require 0.34 fluid ounces of chlorine to bring the pH level up to 6.8. The water will then require an additional 0.17 fluid ounces of chlorine for every 353 cubic feet of water to bring the pH level up to 7.2.

Knowing this, how much chlorine will you need all together to raise the pH level from 6.4 to 7.2?

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