SOLUTION: the amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 300 seconds with an average speed o

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Question 320036: the amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 300 seconds with an average speed of 4 feet per second. find the average speed of the swimmer if it takes 400 seconds to finish the race.
possible answers: A)2 feet per second B)4 feet per second C)5 feet per second D)3 feet per second
Found 2 solutions by mananth, stanbon:
Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website!
t inversely proportional to 1/r
t=k*1/r k = constant
t=300, r= 4feet/sec
300= k*1/4
k=1200
..
t=400, k=1200
400 =1200/r
r=1200/400
r= 3 feet/sec

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
the amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer.
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t = k/s
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A swimmer finishes a race in 300 seconds with an average speed of 4 feet per second.
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Find "k"
300 = k/4
k = 1200
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Equation for this swimmer:
t = 1200/s
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find the average speed of the swimmer if it takes 400 seconds to finish the race.
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400 = 1200/s
s = 1200/400
s = 3 ft per second
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Cheers,
Stan H.
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possible answers: A)2 feet per second B)4 feet per second C)5 feet per second D)3 feet per second