valkyr wrote:let x- types a and y = types b
An alternative might be to use the variables "a" and "b" for types A and B.
valkyr wrote:maximize, 0.06x+0.10y
As the lesson in the link demonstrated, the optimization equation should be an equation; that is, it should contain an "equals" symbol. You may wish to format as does your book; the equation should be in a form similar to "P = 0.06x + 0.1y".
valkyr wrote:constraints, x+y<=450,000
It would be wise also to consider the constraint pointed out in the previous reply.
Where does the exercise state that the amount in the second investment must be less than twice the first investment? Where do you account for the "one-half" and "one-fourth" limits on investments?