Answer:
Explanation:
To earn a total interest of $231 in one year by investing $3500 in two bank accounts, one at 4.7% annual interest and the other at 18% annual interest, the person should invest $2200 in the account with 18% annual interest and $1300 in the account with 4.7% annual interest. This allocation will yield $201.60 in interest from the 18% account and $29.40 in interest from the 4.7% account, for a total interest of $231.