Question 1105486
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Interest + interest     = total interest

1800*x   + 800*(x+0.01) = 190    <<<---=== where x is percentage for $1800 loan expressed as the decimal (like 3.5% = 0.0035 . . . )


1800x + 800x + 8 = 190

2600x = 190-8 = 182  ====>  x = {{{182/2600}}} = 0.07 = 7%.


<U>Answer</U>.  $1800 was invested at 7%  and  $800 was invested at 8%.


<U>Check</U>.   1800*0.07 + 800*0.08 = 190 dollars.   ! Correct !
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