document.write( "Question 358532: A project must be finished in 80 days. Contractor A costs $ 150 a day; Contractor B costs $ 100 per day. The project manager has three possible choices:\r
\n" ); document.write( "\n" ); document.write( "(a) Hire contractor A alone. The project would be finished just in time.
\n" ); document.write( "(b) Hire contractor B alone. But it’d take 100 days.
\n" ); document.write( "(c) Mix use of contractor A and contractor B.\r
\n" ); document.write( "\n" ); document.write( "Find the solution to minimize total cost and to meet deadline
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Algebra.Com's Answer #255879 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "Note: contractor A will cost $12,000 working alone to finish in 80 days
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document.write( "Finding the time it would take working together.\r
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document.write( "Multiplying thru with 80*100*x to clear the denominators
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document.write( "100x + 80x = 8000
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document.write( "180x = 8000
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document.write( "x = 44.44 hrs   Time would meet deadline..
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document.write( "Cost:
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document.write( "150*44.44hr + 100*44.44hr = 6666.66 + 4444.44 = $11,111.17
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document.write( "Mix use of contractor A and contractor B would minimize the total cost (and meets deadline) \n" );
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