SOLUTION: Bianca has $4000 invested, part at 5% per annum and the remainder at 3% per annum simple interest. the total income year from these investments is $168. how much has she invested a

SOLUTION: Bianca has $4000 invested, part at 5% per annum and the remainder at 3% per annum simple interest. the total income year from these investments is $168. how much has she invested a

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Question 850687: Bianca has $4000 invested, part at 5% per annum and the remainder at 3% per annum simple interest. the total income year from these investments is $168. how much has she invested at each rate.
Answer by harpazo(655) (Show Source): You can put this solution on YOUR website!

Let x = amount invested at 5%
Let (4000-x) = amount invested at 3%
Your equation is:
0.05x + 0.03(4000-x) = 168
Can you take it from here?
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