SOLUTION: Solve. 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 75 seconds with an average s

Algebra ->  Test -> SOLUTION: Solve. 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 75 seconds with an average s      Log On


   

Question 437264: Solve. 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 75 seconds with an average speed of 4 feet per second. Find the average speed of the swimmer if it takes 60 seconds to finish the race.
A. 5 feet per second
B. 4 feet per second
C. 7 feet per second
D. 6 feet per second
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

*Note: When Quantities vary inversely,they are related by the relationship:

 y+=+%28k%2Fx%29 k being  the constant of proportionality.

A swimmer finishes a race in 75 seconds with an average speed of 4 feet per second

   75sec = k/4'/sec

   300 = k

  t = 300/r

  60*r = 600

     r = 5'/sec