The cost per hour for fuel to run a train is v^2/4 dollars,where v is the speed of train,in miles per hour.Other costs including labor are $300 per hour.How fast should the train travel on a 360 mile trip to minimise the total cost for the trip.

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- Nov 15th 2009, 12:29 PMmathcalculushelpThe cost per hour...
The cost per hour for fuel to run a train is v^2/4 dollars,where v is the speed of train,in miles per hour.Other costs including labor are $300 per hour.How fast should the train travel on a 360 mile trip to minimise the total cost for the trip.

- Nov 16th 2009, 04:39 AMmr fantastic