A potable water network will connect a central supply located on the bank of a 500-meter river width to a housing complex located on the other side of the river, 2000 meters below the central one. the cost of the work across the river is $640 per meter, while on land it costs $312. What is the most economical way to install the drinking water network? A.( ) 259.17 meters below the supply center. B.( ) 249.17 meters below the supply center. C.( ) 279.17 meters below the supply center. D.( ) 219.17 meters below the supply center. Answers:C

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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A potable water network will connect a central supply located on the bank of a 500-meter river width to a housing complex located on the other side of the river, 2000 meters below the central one. the cost of the work across the river is $640 per meter, while on land it costs $312. What is the most economical way to install the drinking water network? A.( ) 259.17 meters below the supply center. B.( ) 249.17 meters below the supply center. C.( ) 279.17 meters below the supply center. D.( ) 219.17 meters below the supply center.

Answers:C

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