SOLUTION: The person swims at 6 kilometers per hour and runs at 18 kilometers per hour. For what distance x is the total time for swimming and running 3 hours? Round to the nearest tenth of

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Question 704236: The person swims at 6 kilometers per hour and runs at 18 kilometers per hour. For what distance x is the total time for swimming and running 3 hours? Round to the nearest tenth of a kilometer.
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
The description tells nothing about how this person distributes his time between the swimming and the running. We can find an interval of distance which might be possible for the 3 hour time period.

The person will swim, but not for all three hours. The lowest distance possible must be more than (6 km/hour)*3 hours=18 km.

The person will run, but not for all three hours. The highest distance possible must be less than (18 km/hour)*3 hours=54 km.

Using x for distance, . Does this exercise have more information?
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