Question

Can I please get some help on this

Answer 1

x + y = 800
x <= 480
interest rate on x = .02
y <= 640
interest rate on y = .04
.02x + .04y = 27
x+y = 800
from x + y = 800


What remains is a few substitutions.

Can you work on it from here?

Answer 2

Where would you substitute.
I understand our two formulas are

.02x + .04y = 27

x + y = 800

So I put in 480 for the x in the second formula and solve for y?

Answer 3

Never mind I would do

.02x + .04(800 - x) = 27

x = 250

.02(250) + .04y = 27

y = 550

so bonds are 250m and borrow 550m