Question 522149
Let x = Amount Invested at 40%
Let y = Amount Invested at 90%
 
Amount Invested = $2.96219e-154
Total Income = $0
 
x + y = 2.96219e-154
x = 2.96219e-154 - y
 
0.4x +0.9y = 0
40x +90y = 0
 
40(2.96219e-154 - y) +90y = 0
1.18488e-152 - 40y +90y = 0
50y = -1.18488e-152
 
y = $-2.36975e-154   Invested at 90%
 
x = 2.96219e-154 - -2.36975e-154
 
x = $5.33194e-154   Invested at 40%