[COLOR=rgb(0, 0, 0)]Problem:[/COLOR] A Corporation borrowed $775,000 to expand. 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 $67,500 and the amount borrowed at 8% was four times the amount borrowed at 10%?
Is my set up correct?
x + y + z = 775,000
.08x + .09y + .10z = 67,500
z= 4x