Jupiter Inc. has decided to acquire a new weather satellite. After considering several options it has narrowed its search to two satellites.

Satellite XPTO: purchase cost of $296578 and operating costs of $27456 per year (paid at the end of each year).

Satellite XYZ: purchase cost of $163608 and operating costs of $65886 per year (paid at the end of each year).

Both satellites have a service life of 11 years. Based on the defender-challenger approach and given that the MARR is 4%, reinvestment rate is 10%, and minimum external rate of return is 10%, compute the incremental external rate of return of choosing the most expensive satellite. Note: round your answer to two decimal places, and do not include spaces, percentage signs, plus or minus signs, nor commas. If your answer is 15%, write 15, not 0.15.