# Math

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An executive invests \$24,000, some at 7% and some at 5% annual interest. If he receives an annual return of \$1600, how much is invested at each rate?

• Math -

Let amount invested at 7% be \$x.
Amount invested at 5% = \$(24000-x)
x*0.07+(24000-x)*0.05 = 1600

Solve for x.

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