Sppose each friend received $39 from selling the 13 t-shirts.How much profit did the students earned for each shirt?

Well Say. 39/13=3

So 3$ each

Profit is the moneys collected, subtracating costs. You did not mention costs.

Cause it's not writing

Thanks......

To determine the profit earned for each shirt, we need to know the cost price of each shirt and subtract it from the selling price.

Let's assume that the cost price of each shirt is X dollars. Since each friend received $39 from selling the 13 t-shirts, we can set up the following equation:

13 * 39 = 13 * X (since each friend received $39)

Simplifying the equation:

507 = 13X

To find the value of X, we can divide both sides of the equation by 13:

X = 507 / 13
X ≈ 39

Therefore, the cost price of each shirt is approximately $39.

Now, to calculate the profit earned for each shirt, we subtract the cost price from the selling price. The selling price was $39, as each friend received that amount.

Profit per shirt = Selling price per shirt - Cost price per shirt
Profit per shirt = $39 - $39
Profit per shirt = $0

Hence, there was no profit earned per shirt, as the selling price was equal to the cost price.