document.write( "Question 1176830: A company charters a party boat that normally costs $40 per person. A group discount reduces
\n" ); document.write( "the fare by $0.25 for each ticket sold; the more tickets sold, the lower the per-person fare. The
\n" ); document.write( "maximum capacity of the boat is 90 people, including the crew of 5 people. What size of group
\n" ); document.write( "would maximize the boat owner’s revenue?
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Algebra.Com's Answer #804650 by Boreal(15235)\"\" \"About 
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x is one person added
\n" ); document.write( "so that (40-0.25x)x=revenue=-0.25x^2+40x.
\n" ); document.write( "the maximum of this quadratic is x=-b/2a or -40/-0.5=80
\n" ); document.write( "When x=80
\n" ); document.write( "the per person fare is $20, and the revenue is $1600, and 85 people are on the boat.
\n" ); document.write( "can check with 85 customers, the maximum, where the per person fare is $18.75=$1593.75, not the maximum revenue.
\n" ); document.write( "and look at 79, where the per person cost is $20.25 and maximum revenue is $1599.75\r
\n" ); document.write( "\n" ); document.write( "Maximize revenue with a group size of 80.
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