<PRE><B>Question 1121176</B>
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.. the annual interest rates are 11% and 13%. of the total amount interest is 15,200 and the total interest earned per year is 1,840, how much is invested at 11% rate?
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Invest x and y in each account
{{{x+y=1520}}}


Total one-year interest:
{{{0.11x+0.13y=1840}}}



Question asks for x.
{{{0.11x+0.13(1520-x)=1840}}}

{{{0.11x+0.13*1520-0.13x=1840}}}

{{{-0.02x=1840-(0.13)(1520)}}}

{{{-0.02x=1642.4}}}IMPOSSIBLE


You can recheck the steps shown for any mistakes; otherwise something is wrong with your problem description.</PRE>