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)![]() ![]() You can put this solution on YOUR website! if all 30 were for 2, then you could seat 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "for each 2-seater that is changed for a 5-seater, you gain 3 more seats\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "from 60 to 81 is 21 more seats\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "21/3 is 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so 7 5-seaters and 23 2-seaters \n" ); document.write( " |