Answer:
inflation rate after 1 year is 5.00%
Step-by-step explanation:
expected inflation = 4.25%
risk-free rate (r) = 3.5%
Treasury bonds = 1-year yield plus 0.5%
to find out
what inflation rate is expected after Year 1
solution
we say that yield on 1st year treasury bond is here
r1 = r + inflation rate = 3.5 + 4.25 = 7.75 %
and in 3rd year bond bond value is
r3 = r1 + 0.5% = 7.75 + 0.5 = 8.25 %
and
r3 = r + inflation3
so inflation3 = 8.25 - 3.5 = 4.75 %
so
for 1st year inflation is = 4.25 %
and for 2nd year inflation is = I
and for 3rd year inflation is = I
so mean of these

so I = 5.00 %
so
inflation rate after 1 year is 5.00%