<PRE><B>Question 293311</B>
Lynn walked for 2 hours and then ran for 30 minutes. 
If she ran twice as fast as she walked and she covered 12 miles altogether,
then how fast did she walk?
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Walking DATA:
time = 2 hrs; rate = x mph ; distance = 2x miles
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Running DATA
time = 1/2 hr ; rate = 2x mph ; distance = (1/2)(2x) = x miles
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Equation:
distance + distance = 12 miles
2x + x = 12
3x = 12
x = 4 miles (distance she ran)
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Walking rate = x  = 4 mph
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Cheers,
Stan H.
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