document.write( "Question 1120155: A Postmaster sells stamps usually in the proportion of fifteen 5 - centavo stamps to every six 6- centavo stamps and to every four 30 - centavo stamps in ordering 15,000 of these stamps, how many more 5 - centavo than 6 - centavo stamps should be ordered? \n" ); document.write( "

Algebra.Com's Answer #735813 by ikleyn(52818) $\"\"$ $\"About$

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document.write( "An equivalent re-phrasing is that you can group the stamps sold in sets containing (15 of 5-centavo + 6 of 6-centavo + 4 of 30-centavo) stamps.\r\n" );
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document.write( "Each group contains 15+6+4 = 25 stamps.\r\n" );
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document.write( "15000 stamps contain  = 600 such groups, i.e. contain\r\n" );
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document.write( "    15*600 of 5-centavo\r\n" );
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document.write( "     6*600 of 6-centavo\r\n" );
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document.write( "     4*600 of 30-centavo  stamps.\r\n" );
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document.write( "Now the number under the question is  15*600 - 6*600 = 9*600 = 5400.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Answer. The number under the question is 5400 stamps.\r
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