SOLUTION: nacho invests $9000 in two accounts. the first account pays 5% annually and the second amount pays 4%. if at the end of one year he makes $410 i interest, how much did he invest in
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Question 1145092: nacho invests $9000 in two accounts. the first account pays 5% annually and the second amount pays 4%. if at the end of one year he makes $410 i interest, how much did he invest in each account
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If 
was invested in two accounts, 
at 
and 
at 
and the total interest earned at the end of one year is 
, then we know two things:
and
But from [1] we can deduce:
Then substituting into [2] we have:
i_2}{100}\ =\ Y)
Since you are given and , you now have a single equation in a single variable, namely:
\ =\ 410)
Solve for and then calculate 
John
My calculator said it, I believe it, that settles it
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