word prob people

[dolor]

Three men form a corporation. Mr. A invests x dollars. Mr. B invests y dollars and Mr. C invests y dollars. What part of $100 profit should Mr. A receive if each man shares in the profits in proportion to the amount that he invested?

[opus]

Quick and dirty:

They all spent together:
x+y+y (or should Mister C invest z $?)

So Mister A invests x/(x+y+y) of the total amount invested.
And for that reason he should get x/(x+y+y) *TotalProfit.

But that's math for my 13 year old son!