How much will you have when the bond is retired after 12 years? What was the annual return you earn?

You purchase a high-yield, junk bond for $1,000 that pays $140 annually. After buying the bond, yields decline and you are able to reinvest the interest at only 9 percent. You reinvest all the interest payments.

How much will you have when the bond is retired after 12 years? What was the annual return you earned on this investment?

you open an exell sheet and you calculate that in few minutes, whith a calculate now : every line on a paper and result = in front of this line
you add your lines and at the end you put =

(you do not earn whith this investement because the interrest at the beginning lost you (only 9%-remember) money)
in the investement you lost money that you have not earned whith the first capital : 140$ for 12 years (remember ! ) and you have never earned 140$ annualy in 12 years so you have lost it -cqfd-