Help me please with detailed and clear explanation of the answer

Reference: https://www.studocu.com/ph/document/saint-louis-university-philippines/bs-accountancy/module-2-financial-management/16848263

CRINKLES Nayion bought 20 units of bonds for 2000 par, 12 % For 35 000. what is it's current yield?Interpolaber Naycon's & year bond pays 7 % interest on a 80 0DO face value anually . IF it currently fells for 60 129 45, what is it's yield to maturity?Nayeon bought 600 pieces , 7 year 1510 Face vore bonds at 108 which pays 10% interest. It will nature in 3 years after purchase date. What is its yield if it's subject to 25 %o income tax