Which of the following is most closely equivalent to 15 pounds? Select one:
a. 120 ounces b. 6.8 kilograms c. 33 kilograms d. 507 grams
The correct answer and explanation is:
Correct Answer: b. 6.8 kilograms
Explanation (300 words):
To determine which option is most closely equivalent to 15 pounds, we need to understand the relationship between pounds and other units of mass, particularly kilograms, ounces, and grams.
Step 1: Conversion Basics
Here are the standard conversions:
- 1 pound (lb) = 0.453592 kilograms (kg)
- 1 pound = 16 ounces (oz)
- 1 kilogram = 1000 grams (g)
Step 2: Convert 15 pounds to kilograms
15 lb×0.453592=6.80388 kg15 \text{ lb} \times 0.453592 = 6.80388 \text{ kg}
This means 15 pounds is approximately 6.8 kilograms, making option (b) the correct answer.
Step 3: Eliminate Incorrect Options
- a. 120 ounces
Since 1 pound = 16 ounces: 15 lb×16=240 ounces15 \text{ lb} \times 16 = 240 \text{ ounces} So, 120 ounces is only half of 15 pounds — incorrect. - c. 33 kilograms
33 kg is far heavier than 15 lb. 33 kg÷0.453592≈72.75 lb33 \text{ kg} \div 0.453592 \approx 72.75 \text{ lb} Much more than 15 lb — incorrect. - d. 507 grams
Convert grams to kilograms: 507 g=0.507 kg507 \text{ g} = 0.507 \text{ kg} This is much less than 6.8 kg, so 507 grams is far below 15 pounds — incorrect.
Conclusion
The most accurate and closest equivalent to 15 pounds is 6.8 kilograms, supported by direct unit conversion. Thus, option (b) is the correct choice.