Distance rate and time

Question

An airplane travels 1908!kilometers against the wind in 3 hours and 2178 kilometers 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

1908 against the win

2108 with the wind

what's the wind speed and plane speed??

p + w = 2108/t

p - w = 1908/t where t = time=3, speed = distance divided by time

p+w= 2108/3= 702 2/3

p-w= 636

add

2p= 1338 2/3

p= 669 1/3 kph = plane speed in still air

w= p-636= 33 1/3 kph = wind speed