Answer:
YTM = 8.93%
YTC = 8.47%
Explanation:

The first part is the present value of the coupon payment until the bond is called.
The second is the present value of the called amount
P = market price value = 1,200
C = annual coupon payment = 1,000 x 12% 120
C/2 = 60
CP = called value = 1,060
t = time = 6 years

Using Financial calculator we get the YTC
8.467835879%

The first part is the present value of the coupon payment until manurity
The second is the present value of the redeem value at maturity
P = market price value = 1,200
C = coupon payment = 1,000 x 12%/2 = 60
C/2 = 60
F = face value = 1,060
t = time = 10 years
Using Financial calculator we get the YTM
8.9337714%