Question

Rita makes and sells necklaces. The materials to make each necklace cost $2.75. Last week she made 8 necklaces and wants to make a total profit of $78. Using the equation mc020-1.jpg, Rita determined that she needs to sell each necklace for $7 to make a total profit of $78. Which error did Rita make?

Answer 1

Answer:

C-The equation should be 8 (x minus 2.75) = 78, and she needs to sell each necklace for $12.50.

Step-by-step explanation:

I got it right on edge

Answer 2

The equation to calculate the each necklace price to get a total profit of $78 is given by, 8(x-2.75) = 78.

So Rita has to sell each necklace for $12.5 to make a profit of $78.

Here in the problem it is given that cost of material to make each necklace $2.75.

Let she has to sell each necklace for $x in order to make profit total of $78.

So profit from each necklace is = (x-2.75)

Thus profit for 8 mecklaces is = 8(x-2.75)

According to condition,

8(x-2.75) = 78

8x - 22 = 78

8x = 78 + 22

8x = 100

x = 100/8

x = 12.5

Hence the selling price for each necklace should be $12.5.

So Rita make error in equation forming she take (x+2.75) instaed of (x-2.75).

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Rita makes and sells necklaces. The materials to make each necklace cost $2.75. Last week she made 8 necklaces and wants to make a total profit of $78. Using the equation 8(x+2.75)=78, Rita determined that she needs to sell each necklace for $7 to make a total profit of $78. Which error did Rita make?

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