Suppose F more friends join the business.If the group sells 20t-shirts and divides the profit equally, how much will each friend receive?

To find out how much each friend will receive, we need some additional information. Specifically, we need to know the total profit made from the sale of the t-shirts and the total number of friends in the group.

Let's say the total profit is P and the initial number of friends is N. The profit made from selling 20 t-shirts can be calculated by multiplying the number of t-shirts sold (20) with the profit made per t-shirt.

Once we have the total profit, we can divide it by the total number of friends (including the new ones that joined) to find out how much each friend will receive.

To find the profit per t-shirt, we need more information about the price at which the t-shirts are sold and the cost of producing each t-shirt. Can you provide those details?