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Martha pays 20 dollars for materials to make earrings. She makes 10 earrings and sells 7 for
5 dollars and 3 for 2 dollars. Write a numerical expression to represent this situation and then
find Martha’s profit?

Respuesta :

facundo3141592

We conclude that Martha's profit is 21 dollars.

How to write a numerical expression to represent the situation?

First, we know that Martha pays $20 for the materials, and with that she makes 10 earrings.

She sells 7 for $5, and 3 for $2, then we have two equations, her expenses are:

E = $20

Her revenue is:

R = 7*$5 + 3*$2 = $35 + $6 = $41

Now we want to get her profit. Remember that profit is defined as the difference between the revenue and the expenses, so the profit can be written as:

P = R - E

Replacing R and E we get:

P = $41 - $20 = $21

Then we conclude that Martha's profit is 21 dollars.

If you want to learn more about profit:

https://brainly.com/question/19104371

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