Answer :
Final answer:
The closest estimate of the water content in pounds for an adult weighing 165 lb, based on the average body water percentage of 50-60%, is approximately 75 lb (option b). The correct option is b.
Explanation:
The question pertains to the percentage of water in an adult human body and how that translates to pounds in an adult weighing 165 lb.
Considering that the adult human body is made up of about 50-60% of water, we would calculate the water content by taking the percentage of water and applying it to the total body weight. Here's a step-by-step calculation:
- Identify the average percentage of water content in an adult, which is between 50-60%.
- Calculate the lower estimate by multiplying the body weight (165 lb) by 50% (0.5).
- Do the same for the upper estimate, multiplying the body weight (165 lb) by 60% (0.6).
- The range of water weight in pounds would thus be from 82.5 lb (165 lb x 0.5) to 99 lb (165 lb x 0.6).
Given the answer choices, the closest estimate to this range is 75 lb, which is answer choice (b). The correct option is b.
