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A person's weight decreases from 130 lb to 115 lb. What is the percentage of weight loss?

A. 12.5%
B. 13.04%
C. 13.2%

Answer :

To solve this problem, we want to find the percentage of weight loss from an initial weight of 130 pounds to a final weight of 115 pounds. Here’s how you can calculate it step-by-step:

1. Determine the weight loss:
Subtract the final weight from the initial weight.
[tex]\( \text{Weight loss} = 130 \, \text{lb} - 115 \, \text{lb} = 15 \, \text{lb} \)[/tex]

2. Calculate the percentage of weight loss:
To find the percentage, you divide the weight loss by the initial weight and then multiply by 100.
[tex]\[
\text{Percentage loss} = \left(\frac{\text{Weight loss}}{\text{Initial weight}}\right) \times 100
\][/tex]
Plugging in the numbers:
[tex]\[
\text{Percentage loss} = \left(\frac{15}{130}\right) \times 100 \approx 11.54\%
\][/tex]

Thus, the percentage of weight loss is approximately 11.54%.

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