<PRE><B>Question 284705</B>
let the amount invested at4% be x

The amount invested at 5%=2x

The interest obtained = 350 for 1/2 year  or 700 per year

0.04x+0.05*2x= 700

0.04x+0.1x=700
0.14 x =700

x=700/0.14

x=5000 which is the amount invested at4%

2*5000 = 10000 is the amount invested at5%




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