SOLUTION: . Palmer’s average running speed is 3 kilometers per hour faster than his walking speed. If Palmer can run around a 30-kilometer course in 2 h, how many hours would it take for Pal
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Question 597203: . Palmer’s average running speed is 3 kilometers per hour faster than his walking speed. If Palmer can run around a 30-kilometer course in 2 h, how many hours would it take for Palmer to walk the same course?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Palmer’s average running speed is 3 kilometers per hour faster than his walking speed. If Palmer can run around a 30-kilometer course in 2 h, how many hours would it take for Palmer to walk the same course?
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Walking DATA:
rate = x km/h
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Run DATA:
rate = (x+3) km/h
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Equation:
d = rt
30 km = 2(x+3)
x+3 = 15 km/hr (running rate)
x = 12 km/hr (walking speed)
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? answered
d = rt
15 = 12*t
time = 5/4 = 1 1/4 hrs. (time to walk the course).
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Cheers,
Stan H.
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