1. Let us assume that Billy will invest $23,200 each year for next 25 years. Assuming the interest rate will be 10.4% and that it will compound semiannually, what will be the investments future value?

2. Kevin invested $12,000 for ten years, after which the investment increased to $67,000. Assuming there were no additional payments made at the meantime and that the interest rates compound annually, what was the interest rate?

~These questions are completely unrelated to each other