Final answer:
To determine the weight of Sally that is not carbon, we subtract 18.5% from 100% to find the remaining percentage, which is 81.5%. We then calculate 81.5% of 210 pounds, yielding 171.15 pounds, though this exact number is not provided in the options. There thus appears to be a discrepancy in the question's options.
Step-by-step explanation:
To find the part of Sally's weight that is not carbon, we subtract the percentage of her weight that is carbon from 100%. Since the human body is made up of 18.5% carbon, the remainder of her weight would be 100% - 18.5%, which equals 81.5%. Now, we can calculate the weight that is not carbon in pounds by taking 81.5% of her total weight: 81.5% of 210 pounds = 0.815 × 210 = 171.15 pounds. However, none of the options exactly match this calculation. The closest option to the calculated weight is C) 191.5 pounds, which seems to be a typo in the question. The correct answer would be the numerical equivalent of 81.5% of Sally's weight, which we've calculated as 171.15 pounds. The provided options do not accurately represent this calculation. If the intention was to find the weight that is not carbon in terms of percentage, the answer would be A) 82.5% (rounding 81.5% up to the nearest whole percent). Hence, it seems there is an inconsistency in the given options and the actual calculation.