<PRE><B>Question 1009469</B>
 An airplane travels 5184 km. Against the wind in 8 hours and 6224 km with the wind the same amount of time. What is the rate of the plane in still air and what is the rate of the wind?
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Upwind DATA:
dist = 5184 km ; time = 8 hrs ; rate = 5184/8 = 648 km/hr
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Downwind DATA:
dist = 6224 km ; time = 8 hrs ; rate = 6224/8 = 778 km/hr
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Equation:
r - w = 648
r + w = 778
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Subtract to get:
2w = 130
Wind rate = 65 km/hr
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Calm rate = 648+65 = 713 km/hr
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Cheers,
Stan H.
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