Florida DOT Concrete Batchman/Operator Practice Exam

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What is the formula to convert free moisture percentage to a numeric value?

(Free moisture / 100)
(Free moisture * 100)
(Free moisture / 50)
(Free moisture + 100)

The correct answer is: (Free moisture / 100)

To convert a percentage of free moisture to a numeric value, the appropriate formula involves dividing the free moisture percentage by 100. This calculation transforms a percentage, which is based on a scale from 0 to 100, into a decimal format, which is a numerical representation of the same portion of the whole. For example, if the free moisture content is 5%, applying the formula results in: 5 / 100 = 0.05 This conversion is crucial because many calculations in concrete mixing and batch proportions require decimal values rather than percentages to maintain accuracy and consistency in measurements. In practice, utilizing this formula allows for easy integration of moisture content into calculations for water-cement ratios or other mix design components. Each of the incorrect options either multiplies or adds residual values that do not reflect the correct transformation from a percentage to a numeric format, leading to inaccuracies in quantitative assessments in the batching process.