SOLUTION: Please help me in my homework. I think this is invalid yet our teacher gave it to us. Grace invested $200000 for one year. Some invested at 10% rate and the remaining at 12% rat

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Please help me in my homework. I think this is invalid yet our teacher gave it to us. Grace invested $200000 for one year. Some invested at 10% rate and the remaining at 12% rat      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 940581: Please help me in my homework. I think this is invalid yet our teacher gave it to us.
Grace invested $200000 for one year. Some invested at 10% rate and the remaining at 12% rate. If the accounts earned $4500, how much was invested at each rate?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
The description runs like a two part mixture problem but is an investment problem instead.

u = how much at 10%
v = how much at 12%


system%280.10u%2B0.12v=4500%2Cu%2Bv=200000%29

Two linear equations in two unknown variables, u and v.

Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!

Please help me in my homework. I think this is invalid yet our teacher gave it to us.
Grace invested $200000 for one year. Some invested at 10% rate and the remaining at 12% rate. If the accounts earned $4500, how much was invested at each rate?
This is IMPOSSIBLE!!

At those rates, and a principal of $200,000, earnings should be a lot more than $4,500 for the year. Are you certain 

you have the right numbers &/or info.?