SOLUTION: The costs incurred by a trucking company vary jointly with the number of trucks in service and the number of hours they are used. When 4 trucks are used for 6 hours each, the costs
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Question 526211: The costs incurred by a trucking company vary jointly with the number of trucks in service and the number of hours they are used. When 4 trucks are used for 6 hours each, the costs are $1800.
a)Find the costs of using 19 trucks, each for 12hours. Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 4 trucks used for 6 hours each is 24 truck hours.
1800/24=75 dollars per truck hour
6*4*75=1800
19 trucks for 19 hours is 19*12*75 dollars
