Future Value

Two parts. Show calculations:

a: Calculate the future values of these investments at age 60 at age 60 given a 4% annual return.

1. Start at age 25, invest $2,000 at the end of each year

2. Start at age 35, invest $3,500 at the end of each year

b: Which option provides the greatest return; what is the additional $ return using that option?