document.write( "Question 650287: A company sells running shoes to dealers at a rate of $30 per pair if fewer than 65 pairs are ordered. If a dealer orders 65 or more pairs (up to 600), the price per pair is reduced at a rate of 4 cents times the number ordered. What size order will produce the maximum amount of money for the company? \n" ); document.write( "
Algebra.Com's Answer #407359 by MathTherapy(10552)\"\" \"About 
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A company sells running shoes to dealers at a rate of $30 per pair if fewer than 65 pairs are ordered. If a dealer orders 65 or more pairs (up to 600), the price per pair is reduced at a rate of 4 cents times the number ordered. What size order will produce the maximum amount of money for the company?\r
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\n" ); document.write( "\n" ); document.write( "Let amount of pairs of shoes to be sold, be x, and revenue, R(x)
\n" ); document.write( "Then: R(x) = 30x, if r < 65
\n" ); document.write( "R(x) = x(30 - .04x), or \"R%28x%29+=+30x+-+.04x%5E2\", if 65 ≤ x ≤ 600 \r
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\n" ); document.write( "\n" ); document.write( "Maximum amount of shoes it needs to sell to realize maximum revenue: \"x+=+%28-+b%29%2F2a%7D%7D%2C+or+%7B%7B%7Bx+=+%28-+30%29%2F%282+%2A+-+.04%29\", or \"x+=+%28-+30%29%2F-+.08\", or x = 375 pairs\r
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\n" ); document.write( "\n" ); document.write( "With maximum amount of pairs to be sold to realize maximum revenue being 375, maximum revenue will occur at:\r
\n" ); document.write( "\n" ); document.write( "\"R%28375%29+=+30%28375%29+-+.04%28375%29%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"R%28375%29+=+11250+-+.04%28140625%29\"\r
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\n" ); document.write( "\n" ); document.write( "R(375) = 11,250 – 5,625\r
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\n" ); document.write( "\n" ); document.write( "R(375), or maximum revenue for 375 pairs being sold = $\"highlight_green%285625%29\"\r
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