Can someone answer these problems?

A bond with a face value of $1,000 has 12 years until maturity, carries a coupon rate of 5.4%, and sells for $1,087. a. What is the current yield on the bond? (Enter your answer as a percent rounded to 2 decimal places.) Current yield b. What is the yield to maturity if interest is paid once a year? (Do not round intermediate calculations. Enter your answer as a percent rounded to 4 decimal places.) Yield to maturity c. What is the yield to maturity if interest is paid semiannually? (Do not round intermediate calculations. Enter your answer as a percent rounded to 4 decimal places.) Yield to maturity