Answer:
9.8%
Step-by-step explanation:
Calculation to determine the what rate should Lunar coast expect to issue new bonds
First step is to calculate the previous risk premium, RPBBB
RP BBB= 12.5% - 8.5%
RP BBB= 4%
Second step is to calculate the previous risk premium new RP BBB:
New RP BBB= 4%/2
New RP BBB= 2%.
Now let calculate the new YTM on BBB bonds: YTM BBB= 7.8% + 2%
YTM BBB= 9.8%
Therefore The rate that that Lunar coast should expect to issue new bonds is 9.8%