20. How long will it take to double your money at 8% interest compounded annually? 21. Vincent expects to receive $65,000 from a trust fund in 4 years. What is the current value of this fund if it is discounted at 8%? 22. Lemon received a coin collection worth $30,000 from her uncle in Jan, 2021. If it was worth $20,000 in 1995, what is her uncle's rate of retum on his investment? 23. You to be able to buy $ 100 of today's goods in 9 years. How much would you need in 9 years to accomplish this goal if inflation averages 2.5%? 24. Dava expects to receive $40,000 from a trust fund in 4 years. What is the current value of this fund if it is discounted at 9% compounded annually