Answer:
Yield to maturity (YTM) is 1.91% higher than yield to call (YTC).
Step-by-step explanation:
YTM = {coupon + [(face value - market value)/n]} / [(face value + market value)/2]
YTM = {$120 + [($1,000 - $1,275)/20]} / [($1,000 + $1,275)/2] = $106.25 / $1,137.50 = 9.34%
YTC = {coupon + [(call price - market value)/n]} / [(call price + market value)/2]
YTC = {$120 + [($1,120 - $1,275)/5]} / [($1,120 + $1,275)/2] = $89 / $1,197.50 = 7.43%
9.34% - 7.43% = 1.91%