A book company sold 342,380 copies of a book in the first week. The company sold 361,419 copies in the second week. After 3 weeks, the book company had sold 923,468 copies of the b a. Estimate the number of copies of the book the company sold in the third week. Round ea value to the nearest ten thousand.

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The estimated number of copies sold in the third week is 220,000. To estimate the number of copies sold in the third week, we can first find the total number of copies sold in the first two weeks and then subtract that from the total sold after three weeks. 1. **Total sold in the first week**: 342,380 2. **Total sold in the second week**: 361,419 3. **Total sold after three weeks**: 923,468 Now, we calculate the total sold in the first two weeks: $$ \text{Total sold in first two weeks} = 342,380 + 361,419 = 703,799 $$ Next, we find the estimated number of copies sold in the third week: $$ \text{Copies sold in third week} = \text{Total sold after three weeks} - \text{Total sold in first two weeks} $$ $$ \text{Copies sold in third week} = 923,468 - 703,799 = 219,669 $$ Now, we round 219,669 to the nearest ten thousand: - The nearest ten thousand to 219,669 is 220,000. Thus, the estimated number of copies sold in the third week is **220,000**.

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