A certain aircraft can fly 1280 miles with the wind in 5 hou
A certain aircraft can fly 1280 miles with the wind in 5 hours and travel the same distance against
 the wind in 8 hours. What is the speed of the wind?
 A) 32 mph B) 64 mph C) 48 mph D) 80 mph
Solution
5x=1280
 rt=d
 8y=1280
 so with the wind the plane goes 256
 and against the wind goes 160
 256-160=96
 so half of that is the wind
 48 mph is the speed of the wind
 (208+48)*5=1280
 (208-48)*8=1280

