Mark Johnson invests a fixed percentage of his salary at the end of each year. This year he invested $1500 For the next 5 years, he expects his salary to increase 8% annually, and he plans to increase his savings at the same rate. How much will the investments be worth at the end of 6 years if the average increase in the stock market is (a) 8% (b) 5%(c) 3%

Mark Johnson's investment would worth $ 13,223.95  at 8%,$ 12,338.93  

at 5% and $ 11,784.66  at 3%

Explanation:

In calculating the worth of the investments at different rates of interest I adopted the future value approach as contained in the attached.

15 pounds of apples and 6 cups of flour

you will have $2593.74 in 10 years if you set aside $1,000 at 10%

you will have $9321.91 in 20 years if you set aside $2000 at 8%

you will have $1469.32 in 5 years if you set aside $1000 at 8%

you will have $1296.87 in 10 years if you set aside $500 at 10%

you will have $239.66 in 15 years if you set aside $100 at 6%

you will have $4660.96 in 20 years if you set aside $1000 at 8%