Interpretation : The truth for a ratio of two measurements to be a conversion factor to be explained.
Concept Introduction : Conversion factors help solve problems where one unit of measurement needs to be stated in another. The ratio of any two measures will always be one whenever the two measurements are equal.

Answer to Problem 72A
The size of the quantity must be true for a ratio of two measurements to be a conversion factor.
Explanation of Solution
An equivalent measurement ratio is referred to as a conversion factor.
In general, a measurement's numerical value changes when it is multiplied by a conversion factor, while the quantity being measured's real size stays the same.
Conversion factors are defined as precise quantities inside a system of measurement.
The size of the quantity remains the same for the conversion factor.
Chapter 3 Solutions
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