<PRE><B>Question 996058</B>
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A part of a sum of money is invested at 5% and the other part which is three times as much as the first at 8%. the total annual interest earning is 58,000. how much is invested at each rate?
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x*0.05 + 3x*0.08 = 58000.


0.05x + 0.24x = 58000,


0.29x = 58000,


x = {{{58000/0.29}}} = 200000.


3x = 600000.




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