Question 5066
Let x = amount invested at 16%.  The rest of the $1,000,000, which is 
1000000-x = amountinvested at 19%.  The total investment must be 18% of $1000000.


.16x + .19(1000000-x) = .18(1000000)
.16x + 190000 - .19x = 180000
-.03x = -10000


Divide both sides by -.03
{{{x = (-10000)/(-.03)= 1000000/3 }}}, which is 1/3 of the million dollars:
x = $333,333.33 at 16%


R^2 at SCC