Multiple choice

Total number of copies sold End of $1^{st}$ week $3200$ End of $2^{nd}$ week $5500$ End of $3^{rd}$ week $6800$ End of $4^{th}$ week $7400$ End of $5^{th}$ week $7700$ The table above shows the total number of copies of Book B that were sold by the end of each of the first $5$ weeks of its publication. How many copies of the book were sold during the $3^{rd}$ week of its publication?

  1. $1200$
  2. $1250$
  3. $1300$
  4. $1350$
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C Correct answer
Explanation

The table shows total copies sold by the end of each week. To find sales during the 3rd week, subtract total sales at the end of the 2nd week from total sales at the end of the 3rd week: 6800 - 5500 = 1300.

AI explanation

To find the copies sold during the third week, subtract the cumulative total at the end of the second week from the cumulative total at the end of the third week, which is 6800 minus 5500. The difference is 1300 copies. Therefore, 1300 copies were sold.

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