this is a very simple problem. but if you haven't had algebra, it's gonna be the equivalent of me looking at calculus (i've yet to have it).
You can make the equation:Barton and Gonzalez invested 195,000 in a business venture.
Because that says exactly what is quoted above.
So whatever amount Barton invested, Gonzalez's amount is gonna be 2 1/2 times that amount....Gonzalez invested 2 1/2 times as much as Barton...
You can make this equation:
So you have this system: