IV. Duration Using Excel, caleulate the duration of the foowing bod Assume all lune a face valoe o $100 and a 7% yield to maturity. 10. A 5-year zero coupon note: (a) 7 yeark (b) 4.2 years; (e) 5 yeans (d) 0 years 11. A7-year bond with cougom of 4.0%; (a) 457 ynars (b) yearx (c) Oyurx (d) 616 years 12. A 10-year bond with coupon of 90%: (a) 10 yeax (b) 7.2 yewm (c) 0 x (d) so years Assume you hold a bond portfolio with an aver yield to maturity of 5% and a duration of 5 years 13. What would be the effect of a 100 basis bond portfolio: (a) +"R. (b)-lor%; (c) +1TR; (d)-50% i 4 what new yield to maturity would make the portfolio kse-rits "le (a) SS%; (b) 15.5% (c) 4%, (d) SO%; point reduction in yields on the vale of the