SOLUTION: The Computer Club invested $2200, part at 4.5% interest and the rest at 7%. The total annual interest earned was $144. How much was invested at each rate? How do I set up this pro

Algebra ->  College  -> Linear Algebra -> SOLUTION: The Computer Club invested $2200, part at 4.5% interest and the rest at 7%. The total annual interest earned was $144. How much was invested at each rate? How do I set up this pro      Log On


   

Question 110957This question is from textbook Algebra and Trigonometry
: The Computer Club invested $2200, part at 4.5% interest and the rest at 7%. The total annual interest earned was $144. How much was invested at each rate?
How do I set up this problem? This question is from textbook Algebra and Trigonometry

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="amount @ 4.5%", so 2200-x="amount @ 7%"

x(4.5%)+(2200-x)(7%)=144