To find the present value the formula is
P=A÷(1+r)^t
P present value
A future value 25000
R interest rate
T time 6
So we need to find the present value once at 5.5% and the present value 5%
At 5.5% the present value is
P=25,000÷(1+0.055)^(6)=18,131.15
At 5% the present value is
p=25,000÷(1+0.05)^(6)=18,655.38
The difference
18,655.38−18,131.15=524.24