I prefer explanation with BA II plus calculator 1. Mr Adam has just invested $20,000 for his son (age one).

Hello Dear Tutors, please help me with this. I prefer explanation with BA II plus calculator1. Mr Adam has just invested $20,000 for his son (age one). This money will be used for his son's education 15 years from now. He calculates that he will need $60,000 by the time the boy goes to school. What rate of return will Mr. Adam need in order to achieve this goal?2.