document.write( "Question 324480: There are 30 tables of two types, one type seats 5 people and the other one seats 2 people. If 81 students are seated and all the tables are filled, how many tables of two are there? \n" ); document.write( "
Algebra.Com's Answer #232236 by scott8148(6628)\"\" \"About 
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if all 30 were for 2, then you could seat 60\r
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\n" ); document.write( "\n" ); document.write( "for each 2-seater that is changed for a 5-seater, you gain 3 more seats\r
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\n" ); document.write( "\n" ); document.write( "from 60 to 81 is 21 more seats\r
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\n" ); document.write( "\n" ); document.write( "21/3 is 7\r
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\n" ); document.write( "\n" ); document.write( "so 7 5-seaters and 23 2-seaters
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