Call the account A, B, C
.07A+.06B+.04C=1412
A=2B or A-2B=0
A+B+C=24900
I assume you can solve now.
an investor has a total of $24,900 deposited in three different accounts which earn annual interest rate of 7%, 6%, and 4%. the amount deposited in the 7% account is twice the amount in the 6% account. if the three accounts earn a total annual interest of about $1412 how much money is deposited in each account?
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