Problema Solution
Andrew received an inheritance of 40,000. He invested part at an annual rate of interest of 8% and the rest at 10%. If the total annual earnings were 3400, how much money was invested at 8% ?
Answer provided by our tutors
Let 'x' the money invested at 8%. Then the money invested at 10% is 40,000 - x.
0.08x + 0.10(40,000 - x) = 3400
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click here to see the equation solved for x
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x = $30,000
$30,000 were invested at 8%.