Question

Anne bought a necklace for each of her three sisters. She paid $7 for each necklace. Suppose she had $9 left. Write and solve an equation to find how much money Anne had intially to spend on each sister.

Answer 1

Anne spent $21 buying necklaces for her sisters and had $9 left. Adding these two amounts tells us that she started with $30.

Step-by-step explanation:

The subject of this problem is mathematical in nature, specifically dealing with basic algebra. We are given that Anne is buying necklaces for each of her three sisters and that each necklace costs $7. Therefore, the total cost of all three necklaces can be calculated by multiplying 3 (number of necklaces) by 7 (cost per necklace). This gives us a total of $21 spent on necklaces.

We're also told that Anne has $9 left after buying the necklaces. So to find out the initial amount of money Anne had, we need to add this remaining amount to the cost of the necklaces. That would be 21 (for the necklaces) + 9 (remaining money) = 30. Therefore, Anne initially had $30 to spend on each sister.

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