Question 613861
$ 10,1000 - Total

Savings  = x------- 4.5%
Bonds=2x-------5%
(10000-3x)-----4%

Interest  = 455

4.5%x+5%*(2x)+(10000-3x)*4%= 455

multiply equation by 100

4.5x+10x+40000-12x=45500
2.5x=45500-40000
2.5x=5500
x= 5500/2.5

x= 2200
so you know how much he invested in other accounts