Final answer:
The weight of a person who weighs 87 kilograms is approximately 190 pounds when converted using the factor of 2.205 and rounded to two significant figures, which are the least number of significant figures in the given data.
Step-by-step explanation:
If a person weighs 87 kilograms and we want to find their weight in pounds, we must use the conversion factor that 1 kilogram is approximately equivalent to 2.205 pounds. Using this conversion factor, we can perform the following calculation:
Weight in pounds = (Weight in kilograms) × (Pounds per kilogram)
If we insert the given values into this equation, we get:
Weight in pounds = 87 kg × 2.205 lb/kg = 191.835 lb
However, we must express the answer to the correct number of significant figures. Since '87' has two significant figures and '2.205' has four significant figures, and in multiplication, the number of significant figures in the result should be the same as the number in the least precise measurement that was used in the calculation, the answer needs to be rounded to two significant figures.
Therefore, the person's weight is approximately 190 pounds when rounded to the correct number of significant figures.