0.09x+0.06 (2500-x)=171
solve for x
0.09x+150-0.06x=171
0.03x+150=171
0.03x=171-150
0.03x=21
X=21÷0.03
X=700 invested at 9%
2500-700=1800 invested at 6%
Hope it helps!
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