Im not sure what you are asking, but for a probability tree, you have the total # of something at the very top of the tree, next it branches out into groups, and those groups represent something like colored marbles or something... and to find percent you divide the total number like the number of marbles bye 100 and multiply that number bye the thing that you're trying to get job percent like a color of marbles, I hope this helped...
Each person will pay $5.25.
Marcus went above his budget as 25% percent of his allowance would be $5, and he went $2.42 over.
D 20 cubic feet would be your answer
