On Sunday, I bought three dresses for $900. I gave one of thein to my

friend and she paid me 35% of the total cost of all the dresses. How much

did my friend give me?

Three dresses for $900. This means each dress costs $300. You gave your friend one of the dresses. She paid 35% of the total cost for all three dresses.

Let P = the amount of money you received from your friend.

P = 900 x 0.35

P = $315