A small corporation borrowed $800,000 to expand its line of toys. Some of the money was borrowed at 8%, some at 9% and some at 10%. How much was borrowed
at each rate if the annual interest owed was $67,000 and the amount borrowed at 8%
was five times the aount borrowed at 10%. (You need to show the system of equations
on your paper. You may solve using matrices. Write your answer in the box provided
in the order for the answer 8%, 9%, 10%)