Question 978562
x invested at 4%
10000-x invested at 5%

.04 x+284=(0.05)(10000-x)
0.04x +284=500-0.05x
0.09x=216
x=2400
10000-x=7600

Check 4% of 2400=$96
5% of 7600=$380

The difference is $284.