Part of 3000 was invested at 12%, another part at 13%, and the remainder at 14%. The total yearly income from the three investments is $400. The sum of the amounts invested at 12% and 13% equals the amount invested at 14%. Determine how much is invested at each rate

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10 September, 16:58

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Alden Lang · Answer 1

Income earned over one year is principal * int rate so we have 0.12*A + 0.13*B + 0.14*C = 400 and A + B + C = 3000 and A+B = C