Need Help on This ASAP

Question

An airplane travels 1250km against the wind in 2 hours and 1630km with the wind in the same amount of time. What is the rate of the plane in still air and what is the rate of the wind?

Answer 1

1250 = 2(r-s) = 2r - 2s

1630 = 2(r+s) = 2r + 2s

2880 = 4r

720 = r

1250 = 2(720 -s)

1250 = 1440 - 2s

-190 = -2s

s = 95