Multiple choice

Carlos delivered n packageson Monday, 4 times as many packages on Tuesday as on Monday, and 3 more packages on Wednesday than on Monday. What is the average (arithmetic mean) number of packages he delivered per day over the three days?

  1. 2n – 3

  2. 2n – 1

  3. 2n + 1

  4. 2n + 3
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C Correct answer
Explanation

Monday = n, Tuesday = 4n, Wednesday = n + 3. Total = n + 4n + n + 3 = 6n + 3. Average = (6n + 3) / 3 = 2n + 1.

AI explanation

The arithmetic mean formula requires dividing the total number of items by the number of periods. Over the three days, Carlos delivered n packages on Monday, 4n packages on Tuesday, and n + 3 packages on Wednesday. The total number of packages is n + 4n + n + 3, which simplifies to 6n + 3. Dividing this total by 3 days gives an average of 2n + 1 packages per day.

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