Jacob Fonda deposited $25,000 in a savings account at 10%

Question

interest compounded semiannually. At the beginning of
Year 4, Jacob deposits an additional $40,000 at 10% interest
compounded semiannually. At the end of six years, what is the balance of
Jacob’s account?

Answer 1

At the beginning of year 4 ---> at the end of year 3

Pick Year 6 as your "focal point" on a time graph.
Amount = 25000(1.05)^12 + 40000(1.05)^6
= 98500.23