Question 591020
Paul lifts off in his balloon at noon from Lost Wages, heading east from Pecos Gulch Conference Center. 
With the wind blowing west to east, he averages a land speed of 30 m/hr. This will allow him to arrive in 4 hours, just as the conference begins.
Paul DATA:
time = 4 hrs ; rate = 30 km/hr ; distance = 4*30 = 120 km
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 Meanwhile, Rhaina is 160 km north of Lost Wages. At the moment of Pual'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?
Raina DATA:
rate = r km/hr ; time = 4 hrs ; distance = 4r km
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Equation:
4r = 120
r = 30 km/hr (Raina's rate)
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Cheers,
Stan H.