Final answer:
To convert 125 pounds to kilograms, use the conversion rate of 1 kg = 2.20 lbs. After setting up a proportion and performing the calculation, the result is approximately 56.81818 kg. Rounding to the nearest hundredth as per the options given, the correct answer is A. 56.82 kg.
Step-by-step explanation:
To convert pounds to kilograms, we use the given conversion rate 1 kg = 2.20 lbs. To find how many kilograms are in 125 lbs, we set up the following proportion:
1 kg / 2.20 lbs = x kg / 125 lbs.
To solve for x, we cross-multiply and divide:
x = (125 lbs × 1 kg) / 2.20 lbs.
Next, we perform the calculation:
x = 125 / 2.20.
x ≈ 56.81818 kg.
Since the conversion factor of 2.20 lbs has three significant figures, our answer should also have three significant figures. Rounding to three significant figures, we get:
x ≈ 56.8 kg.
Therefore, the correct answer is A. 56.82 kg, when rounded to the nearest hundredth as given by the options.