The Jet Stream Is a Wind Current That Flows Across

The jet stream is a wind current that flows across the United States from west to east. Flying with the jet stream, an airplance flew 3,500 miles in 5 hours. Against the same wind, the return trip took 7 hours. Find the speed of the plane in still air and the speed of the jet stream. ________ mph speed of plane in still air ________ mph speed of jet stream