Problema Solution

If $3300 is invested at 6% annual simple interest, how much should be invested at 9% annual simple interest so that the total yearly income for both investments is 828?

To accumulate $828 income, $_____ should be invested at 9%?

Answer provided by our tutors

let x = the amount invested at 9% annual simple interest


0.06*3300 + 0.09x = 828


by solving we find


x = $7,000


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To accumulate $828 income, $7,000 should be invested at 9%.