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).

Let

Let

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:

Understand?