Answer: a) $66,388.86
the total sum Earl will receive when he withdraws the money in his 65th birthday is $66,388.86
Explanation:
Given that;
Annuity = $150
r = 10%
Earl is 25years now
Earl plans to withdraw the money when he is 65
which mean Period N = ( 65 - 25 ) = 40
To find the future value, we use use the express
Future value = annuity × (((1+r)^n)-1)/r)
we substitute our values
Future Value = 150 × (((1 + 10/100)^40)-1)/10/100)
= 150 × (((1.10)^40)-1) / 0.01)
150 × ((45.2592 - 1)/0.1)
150 × 442.5924
Future Value = $66,388.86
therefore the total sum Earl will receive when he withdraws the money in his 65th birthday is $66,388.86