If Ernest Rutherford Died and Left $8000 to Be Invested

question 31

Multiple Choice

If Ernest Rutherford died and left $8000 to be invested for a period of 100 years to benefit medical students and scientific research, how often would this money double if it were to earn 5 per cent per year for all years?

• A) every 10 years
• B) every 14 years
• C) every seven years
• D) every five years