CWEA Maintenance Technologist Practice Test

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Enhance your skills with the CWEA Maintenance Technologist Test. Utilize flashcards and comprehensive questions, each containing hints and detailed explanations. Prepare thoroughly for your certification!

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What is the required amount of sodium hypochlorite needed to reach 70% capacity in a tank with 1,200 gallons current level?

14,900 gallons
15,800 gallons
12,700 gallons
10,500 gallons

The correct answer is: 14,900 gallons

To determine the amount of sodium hypochlorite required to reach 70% capacity in a tank with a current level of 1,200 gallons, you first need to establish the total capacity of the tank. If 1,200 gallons represents the current level, we can infer that this value is less than or equal to 70% of the full capacity of the tank. The formula to find the total capacity of the tank (C) when you know the portion of it (P) is: C = P / 0.7 Substituting the current level into this equation gives: C = 1,200 gallons / 0.7 = approximately 1,714.29 gallons as the total capacity. Now, to find the amount needed to fill the tank to this 70% threshold from the current level, you multiply the total capacity by 0.7: Amount needed = C * 0.7 = 1,714.29 gallons * 0.7 = approximately 1,200 gallons (which is the current level). Therefore, if this current level is to be increased to the 70% mark, it implies that the remaining space in the tank is actually filled with sodium hyp