You know that the sum of a and b is 24, because the average is the sum of the numbers divided by the amount of numbers added together, and 12*2 is 24. Add 3 to 24 so you have 27, and then divide that by 3 because there are now 3 numbers in the set. The average of a, b, and c is 9.
Answer:
The main themes in "The Necklace" are greed, deceptive appearances, and beauty and vanity. Greed: Mathilde Loisel's overwhelming desire to live a life of luxury blinds her to the comforts she already possesses and ultimately leads to her losing what wealth and status she initially has.
Explanation:
