After 12 years, the amount of money Dylan would have in his account more than Sebastian is $49.90.
How much more money would Dylan have in his account than Sebastian?
Dylan:
Principal, P = $700
Interest rate, r = 1¾% = 1.75% = 0.0175
Number of periods, n = 4
Time, t = 12 years


A = 700.00(1 + 0.004375)⁴⁸
A = 700.00(1.004375)⁴⁸
A = $863.18
Sebastian:
Principal, P = $700
Interest rate, r = 1¼% = 1.25% = 0.0125
Number of periods, n = 365
Time, t = 12 years


A = 700.00(1 + 3.4246575342466E-5)⁴³⁸⁰
A = 700.00(1.0000342465753)⁴³⁸⁰
A = $813.28
Therefore,
Difference between Dylan and Sebastian balance = $863.18 - $813.28
= $49.90