Question 1088595
Invested at 8%: x
Invested at 12%: 3x
0.08x+0.12(3x) = 264
0.08x+0.36x = 264
0.44x = 264
x = 600
3x = 1800
He invested 600 at 8% and 600*3 = 1800 at 12%
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Check:
600*.08 = 48
1800*0.12 = 216
48+216= 264 correct