Solve the following rate of return problems. a. An investment of $1,000 today returns $50,000 in 50 years. What is the internal rate of return on this investment? b. An investment costs $600,000 today and promises a single payment of $11.6 million in 22 years. What is the promised rate of return, IRR, on this investment? c. What return do you earn if you pay $21,500 for a stream of $5,000 payments lasting 10 years? Note: Round your answers to 2 decimal places