A mother wants to invest $15,000 for her son's future education she invests a portion of the money in a bank certificate of deposit which earns 4% and the remainder in a savings bond that earns 17% if

A mother wants to invest $15,000 for her son's future education she invests a portion of the money in a bank certificate of deposit which earns 4% and the remainder in a savings bond that earns 17% if the total interest earned after one year is $900 how much money was invested in the cd account