To convert 50 lb to kg, divide 50 by the conversion factor 2.2 lb/kg. The result is approximately 22.73 kg, rounded to two significant figures.
The student is asking to convert a weight in pounds (lb) to kilograms (kg), using the given conversion factor that 1 kg equals 2.2 lb.
To find out how many kilograms 50 lb is equivalent to, we would divide 50 by 2.2, since we are converting from a larger unit (lb) to a smaller unit (kg).
Here is the calculation:
50 lb รท 2.2 lb/kg = approximately 22.73 kg
It is important to note that the significant figures in the conversion factor dictate the number of significant figures in our answer.
Since '2.2' has two significant figures, our answer should also be rounded to two significant figures, which in this case would be 22.73 kg.