Graduate Management Admission Test (GMAT) Practice Test

In the scenario of mixing two liquids to reach a final concentration, what does inverting the calculated ratio represent?

1. An increase in the total volume

2. The required parts of each liquid

3. A change in the mixing temperature

4. A variation in the sampling technique

The correct answer is: The required parts of each liquid

In the context of mixing two liquids to achieve a desired final concentration, inverting the calculated ratio signifies how many parts of each liquid are needed in the mixture. For instance, if you calculate that you need a certain ratio of Liquid A to Liquid B, inverting this ratio illustrates the specific proportions required to blend both substances successfully. This inversion allows for a straightforward understanding of how much of each liquid must be added to reach the desired concentration, ensuring that the end mixture maintains the correct properties and concentrations intended for the solution. The other options focus on different aspects unrelated to the fundamental concept of ratio mixing. Increasing total volume pertains to the overall amount of liquid rather than the specific concentrations, while changes in mixing temperature could affect solubility and reaction rates, but they do not directly affect the parts needed for each liquid in the ratio. Variations in sampling technique address the methods of measuring or testing the liquids rather than the actual mixing process itself.