Problema Solution
A plane traveled 1320 miles to Paris and back. THe trip there was with the wind. It took 11 hours .The trip back was into the wind. The trip back took 22 hours. What is the speed of the plane in still air? What is the speed of the wind?
Answer provided by our tutors
x+ y = 660 / 11 = 60
x - y = 660 / 22 = 30
=> 2 x = 90
x = 45
y=15