Urgent plz show me step by step. Thank You!

Jane is given two series of payments with equal value of present value. The first series is a perpetuity with payments of R at the end of each of the first 3 years, 2R at the end of each of the next 3 years, 3R at the end of each of the next 3 years, etc. The second series is a perpetuity with payments of 1 at the end of each of the first 2 years, 2 at the end of each of the next 2 years, 3 at the end of the next 2 years, etc. Calculate R.