SOLUTION: Lucy has some money invested at 18% annual interest and three times as much invested at 12%. Her total annual income from the two investments is 2200pesos. How much was invested at

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Finance -> SOLUTION: Lucy has some money invested at 18% annual interest and three times as much invested at 12%. Her total annual income from the two investments is 2200pesos. How much was invested at      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   


Question 150607This question is from textbook
: Lucy has some money invested at 18% annual interest and three times as much invested at 12%. Her total annual income from the two investments is 2200pesos. How much was invested at each rate?This question is from textbook

Answer by josmiceli(6786) About Me  (Show Source):
You can put this solution on YOUR website!
Let the amount invested at 18% = x
Then the amount invested at 12% = 3x
.18x+%2B+.12%2A3x+=+2200
.18x+%2B+.36x+=+2200
.54x+=+2200
x+=+4074
3x+=+12222
4074 pesos were invested @ 18% and 12,222 pesos were
invested @ 12%