If the use rate is 1/4% for surfactant and you have 1200 gallons of solution, how many gallons of surfactant are needed?

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Multiple Choice

If the use rate is 1/4% for surfactant and you have 1200 gallons of solution, how many gallons of surfactant are needed?

Applying a percentage to the total solution is how you determine the additive amount. A use rate of 1/4 percent means take 0.0025 of the total volume. For 1200 gallons, 1200 × 0.0025 equals 3 gallons of surfactant. (Equivalently, 1/4 percent is 1/400, and 1200 ÷ 400 also gives 3.) So, three gallons are needed.

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