Question 19

The factor used to convert pounds to kilograms is 2.2.

To convert pounds to kilograms, the conversion factor is 2.2, meaning that 1 pound is approximately equal to 0.454 kilograms, which can be simplified to the use of 2.2 for conversion purposes.

A) 0.22

This option is incorrect as 0.22 does not represent the correct conversion factor from pounds to kilograms. The actual factor is closer to 2.2, making 0.22 too small to convert pounds accurately to kilograms.

B) 2.2

This is the correct option, as 2.2 is widely accepted as the conversion factor used to convert pounds to kilograms. Specifically, to convert pounds to kilograms, one would multiply the number of pounds by 0.453592, which is approximately 2.2 when rounded for practical use.

C) 22

Option C is incorrect because 22 is significantly larger than the necessary conversion factor. Using 22 would vastly overestimate the weight in kilograms when converting from pounds.

D) 220

This option is also incorrect. Similar to option C, using 220 as a conversion factor would result in an exaggerated figure when converting pounds to kilograms, as the actual factor is much lower.

Conclusion

The correct answer, 2.2, is essential in the conversion process from pounds to kilograms, providing an accurate means to translate weight measurements. All other options presented are incorrect as they either underestimate or overestimate the conversion, failing to reflect the established standard used in weight conversion.