If the speed of the plane and the wind are p and w, then since distance = speed * time,
3(s+w) = 390
5(s-w) = 390
s = 104
w = 26
Flying with the wind, a plane traveled 390 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5 hours. Find the rate of the plane in calm air and the rate of the wind. rate of plane ? mph
rate of wind ? mph
1 answer
1 answer