SOLUTION: Last year Sarah had $20,000 to invest she invested some an account that paid 9% simple interest rate per year and she invested the rest and account that pay 10% simple interest rat

Question 1024352: Last year Sarah had $20,000 to invest she invested some an account that paid 9% simple interest rate per year and she invested the rest and account that pay 10% simple interest rate per year after one year she received a total of $1,840 how much did she invest in each account
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = amount she invested at 9%
= amount she invested at 10%
------------------

and

She invested $16,000 @ 9%
She invested $4,000 @ 10%
------------------------
check:

OK
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