Solve the following rate of return problems.

1. An investment of $1,500 today returns $62,000 in 50 years. What is the internal rate of return on this investment?
2. An investment costs $750,000 today and promises a single payment of $12.7 million in 22 years. What is the promised rate of return, IRR, on this investment?
3. What return do you earn if you pay $23,430 for a stream of $4,000 payments lasting 10 years?

Note: Round your answers to 2 decimal places.