Question 911237
Total amount of money invested: $12000
x+y=12000,
Total yearly interest for the two accounts is: $855
0.06*x+0.09*y=855
x=12000-y
Substitute for x
0.06*(12000-y)+0.09*y=855
Multiply out
720-0.06*y+0.09*y=855
Combine like terms.
0.03*y=135
Isolate y
y=$4500.00 at 9%
x=12000-y
Calculate x
x=$7500.00 at 6%
Check
0.06*7500+0.09*4500=855
450+405=855
855=855
If this statement is TRUE and neither x nor y  is negative then all is well
code int1