Mathematics, 08.08.2019 23:30, jose9794

Gonzalez manufacturing borrowed $18000. part of the money was borrowed at 4%, part at 6%, and part at 8%. the annual interest was $1120, and the total amount borrowed at 4% and 6% was twice the amount borrowed at 8%. use gaussian elimination or gauss-jordan elimination to find the amount borrowed at each rate.
how much money was borrowed at 4%?

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Gonzalez manufacturing borrowed $18000. part of the money was borrowed at 4%, part at 6%, and part a...