Question

A publisher is shipping books to bookstores. Each book has a mass of 1450 grams. Shipping rates are determined by weight, in pounds.
1 kilogram a 2.2 pounds, 1 kilogram = 1000 grams
To the nearest tenth of a pound, what is the total weight of 12 books? Enter the answer in the box.
pounds

Answer 1

To find the total weight of 12 books in pounds, we can follow these steps:

1. First, determine the total mass of the 12 books in grams:
\[
\text{Total mass in grams} = \text{number of books} \times \text{mass of each book}
\]
\[
\text{Total mass in grams} = 12 \times 1450 = 17400 \text{ grams}
\]

2. Next, convert the total mass from grams to kilograms:
\[
\text{Total mass in kilograms} = \frac{\text{Total mass in grams}}{1000}
\]
\[
\text{Total mass in kilograms} = \frac{17400}{1000} = 17.4 \text{ kilograms}
\]

3. Then, convert the total mass from kilograms to pounds:
\[
\text{Total mass in pounds} = \text{Total mass in kilograms} \times 2.2
\]
\[
\text{Total mass in pounds} = 17.4 \times 2.2 = 38.28 \text{ pounds}
\]

4. Finally, round the result to the nearest tenth:
\[
\text{Total weight in pounds} \approx 38.3
\]

Therefore, the total weight of 12 books is **38.3 pounds**.