Dorinda Metzer: Let x be the amount invested at 9%. Then 3x-100 is the amount invested at 7%. Over two years the interest is 2(0.09x)+2(0.07(3x-100)) = 166.0.18x+0.42x-14=1660.60x=180x=300$300 was invested at 9% and $800 was invested at 7%....Show more
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment