Question

The Fiedler family has up to $130,000 to invest. They decide that they want to have at least $40,000 invested in stable bonds yielding 5.5% and that no more than $60,000 should be invested in more volatile bonds yielding 11%. How much should they invest in each type of bond to maximize income if the amount in the stable bond should not exceed the amount in the more volatile bond? What is the maximum income?

Answer 1

this is all i have so far...
x = money invested in stable bonds (5.5%)
y = money invested in volatile bonds (11%)

total <= 13000
x+y = total amount to invest.

x >= 40,000
y => 60,000

Answer 2

@ganeshie8 @dumbcow @thomaster @robtobey @jdoe0001 @dan815

Answer 3

pretty good so far, there is one more inequality
y >= x

and the objective function
Income = .055x + .11y

graph all the inequalities

Income is maximized when x,y are largest possible given restraints, this is at point
(60,000, 60,000)