I am struggling with problem 10-4 and the second part of it 10-5

Problem 10-4 Ryan Company issues a $150,000 on 8/31/X0, 10%, bond that matures in 5 years. Interest is paid on August 31" of each year. How much would you pay to yield: 8% 10% 14% Problem 10-5. Still Ryan Company - How about a zero issued on 5/31/X0, due in 4 years, face amount of $150,000. Current market rates are 11%. How much would you pay? Amortize it