Answer:
Option B
Explanation:
We're been given with:-
Rate of Interest (r) = 6%
Age of retirement = 65
Amount of money invested each year if Mark starts saving at age 20 = $4700
Amount of money invested each year if Mark starts saving at age 30 = $9000
1) Number of years needed to invest if Mark starts saving at age 20 = 65-20
= 45
2) Number of years needed to invest if Mark starts saving at age 30 = 65-30
= 35
3) Total amount of money invested if Mark starts saving at age 20 = Principle invested * time
= 4700 * 45
= $ 211500
4) Total amount of money invested if Mark starts saving at age 30 = Principle invested * time
= 9000 * 35
= $ 315000
5) Amount of money Mark will have to save if he starts saving at age 30 instead of age 20 = 315000 - 211500
= $ 103,500