SOLUTION: Beth runs 100 meters in 40 seconds. If she maintains this constant rate,how long will it take her run 1 kilometer

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Question 737333: Beth runs 100 meters in 40 seconds. If she maintains this constant rate,how long will it take her run 1 kilometer
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
100/40=1000/x
100x=40000
x=40000/100
x=400 second
400/60=6 2/3 minutes