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Answer :
Final answer:
The patient lost approximately 18.85 pounds, which is closest to choice C) 18.8 pounds. This is calculated by multiplying the original weight of 145 pounds by the percentage of weight lost, expressed as a decimal (0.13).
Explanation:
If a patient weighed 145 pounds at their last doctor's office visit and has lost 13% of their weight, the first step is to calculate the amount of weight lost in pounds. You can do this by multiplying the patient's original weight by the percentage of weight lost, expressed as a decimal.
So, the calculation would be 145 pounds multiplied by 0.13 (13% as a decimal), which equals 18.85 pounds. Therefore, the patient has lost approximately 18.85 pounds.
Considering the choices provided, the closest answer to the calculated weight loss is 18.8 pounds. This method demonstrates a basic approach to solving percentage problems, a key skill in mathematics.
In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100.
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