Your friend weighs 93 kg. How many pounds is this? Express your answer rounded to the nearest tenth of a pound
The Correct Answer and Explanation is:
To convert kilograms (kg) to pounds (lb), we use the conversion factor:
1 kilogram = 2.20462 pounds
Your friend weighs 93 kg. So, to convert this to pounds: 93 kg×2.20462 (lbkg)=205.02966 lb93 \, \text{kg} \times 2.20462 \, \left(\frac{\text{lb}}{\text{kg}}\right) = 205.02966 \, \text{lb}
Rounded to the nearest tenth of a pound, the weight is:
205.0 pounds
Explanation
Weight is a measure of how heavy an object or person is, and it can be expressed in different units depending on the system used. The metric system, which is commonly used around the world, uses kilograms (kg) to measure mass or weight. On the other hand, the imperial system, used primarily in the United States, uses pounds (lb).
To convert between these two systems, we need a conversion factor. One kilogram is equal to approximately 2.20462 pounds. This means that every kilogram is just a little more than two pounds. To convert from kilograms to pounds, we multiply the number of kilograms by this conversion factor.
In this case, your friend weighs 93 kilograms. Using the formula: Weight in pounds=Weight in kg×2.20462\text{Weight in pounds} = \text{Weight in kg} \times 2.20462
we multiply: 93×2.20462=205.02966 pounds93 \times 2.20462 = 205.02966 \text{ pounds}
This gives us a precise value, but it’s usually more practical to round the result. Since the question asks for the answer to the nearest tenth of a pound, we look at the digit in the hundredths place (which is 2 in this case). Since it is less than 5, we round down.
So, 205.02966 rounds to 205.0 pounds.
This process ensures consistency and accuracy when converting weights, which is especially important in fields such as medicine, sports, and travel. Understanding unit conversions helps us communicate measurements clearly across different countries and systems.
