Meteorologist Paul Windward and geologist Rhaina Stone are rushing to a paleontology conference ins Pecos Gulch. pal lifts off in his balloon at noon from Lost Wages, heading east for Pecos Gulch Conference Center With the wind blowing west to east, he averages a land speed of 30 km/hr. This will allow him to arrive in 4 hours, just at the conference begins. Meanwhile, Rhaina is 160 km north of the conference. At the moment of Paul's lift off, Rhaina hops into an off-roading vehicle and heads directly for the conference center. At what average speed must she travel to arrive at the same time Paul does?