SOLUTION: robert inherited $4,000 from his grandmother. part was invested at 5 %while the rest was invested at 6 1/2%. The total interest for a year was $227. how much was invested at 6 1/2%

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: robert inherited $4,000 from his grandmother. part was invested at 5 %while the rest was invested at 6 1/2%. The total interest for a year was $227. how much was invested at 6 1/2%      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 163554: robert inherited $4,000 from his grandmother. part was invested at 5 %while the rest was invested at 6 1/2%. The total interest for a year was $227. how much was invested at 6 1/2%.
need a simple breakdown on why the answer is: 1800 were invested at 6 1/2%
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="amount @ 6.5%", so 4000-x="amount @ 5%"

(x)(6.5%)+(4000-x)(5%)=227 __ .065x+200-.05x=227 __ .015x=27 __ x=1800