Question 1084135
0.04x+0.05(10000-x) = (2*0.04x)+140
0.04x+500-0.05x = 0.08x+140
-0.09x = -360
x = 4000 so 4000 are invested at 4% and 10000-4000 = 6000 at 5%
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Check:
4000*0.04 = 160
6000*0.05 = 300
and 300-160 = 140 Correct