Which of the following is the correct mass in pounds (lb) for 90 kg? (Use the conversion factor: 1 kg = 2.2046 lb)

• A. 110.0 lb
• B. 220.5 lb
• C. 198.4 lb
• D. 40.8 lb

Answer: (C)

Verified step by step guidance

1. Identify the given quantity and the conversion factor: you have 90 kg and the conversion factor is 1 kg = 2.2046 lb.
2. Set up the conversion calculation by multiplying the mass in kilograms by the conversion factor to convert to pounds: \(\text{mass in lb} = 90 \ \text{kg} \times 2.2046 \ \frac{\text{lb}}{\text{kg}}\).
3. Perform the multiplication to find the mass in pounds (do not calculate the final number here, just set up the expression).
4. Check the units to ensure they cancel properly: kilograms (kg) cancel out, leaving pounds (lb) as the unit.
5. Compare the calculated value with the given options to identify the correct mass in pounds.