This problem is providing the water consumption in Mexico as 88 billion m³ and the Mexican population as 127.5 million people so that the per capita daily water use is required and found to be 690 m³/person according to the following:
<h3>Dimensional analysis:</h3><h3 />
In chemistry, the use of dimensional analysis and units conversion covers a wide range of calculations, necessary to report a result in a specific way. In this case, we see this problem asks for the consumption of water, in cubic meters, that each person does every day.
Thus, with a view to calculating this, one must first write this values without any million or billion system as shown below:

This means we can get the per capita daily water use by simply dividing these two:

Learn more about dimensional analysis: brainly.com/question/10874167