



 
Hi Oscar, Suppose that the speed of the plane in still air is s miles per hour. The speed of the plane with the wind is thus s + 24 miles per hour and the speed of the plane against the wind is s  24 miles per hour. For each flight rate = distance/time. Write the equation for each flight and then use the fact that the time is the same for both flights to solve for s. I hope this helps,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 