Question

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?

Answer 1

Answer:

21

Step-by-step explanation:

She spended $20 buying the materials

Makes 10 earring

selled 7 earring each for $5

Then selled 3 each for $3

(7x5)+(3x2)-20

35+6-20

=21

But we don't know if there is still some materials left... so we can't get the exact profit Martha made during this process.

Answer 2

Given:

Martha pays 20 dollars for materials to make earrings.

She makes 10 earrings and sells,

7 for 5 dollars

3 for 2 dollars.

To find :

The profit earned by Martha

Solution:

Step 1 of 2:

Let the Selling price of the ten earrings made by Martha is,

( 7 × 5 ) + ( 3 × 2 )

35 + 6 =41

Selling price = 41 dollars

Martha pays 20 dollars for materials to make earrings.

Therefore ,The cost price is 20 dollars.

Selling price = Cost price + Profit

41 =20 + p

The numerical expression to represent this situation is, 41 =20 + p

Step 2 of 2:

The profit earned by Martha is,

41 =20 + profit

Profit = 41 - 20

Profit = 21 dollars

Final answer:

Martha pays 20 dollars for materials to make earrings. She makes 10 earrings and sells 7 for 5 dollars and 3 for 2 dollars.

A numerical expression to represent this situation is 41 =20 + p

Martha's profit is 21 dollars