You have been asked to estimate a riskless rate in Indonesian Rupiah. The Indonesian government has rupiah

Question:

You have been asked to estimate a riskless rate in Indonesian Rupiah. The Indonesian government has rupiah denominated bonds outstanding with an interest rate of 17%. S&P has a rating of BB on these bonds, and the typical spread for a BB rated country is 5% over a riskless rate. Estimate the rupiah riskless rate.