Question 432586
The total of the investments is $5000, thus x+y=5000:
x+y=5000
.03x+.05y=210
Multiply the second equation by 100--
3x+5y=21000
5x+5y=25000
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2x=4000
x=2000
y=3000
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$2000 was invested at 3%, 3000 was invested at 5%.