document.write( "Question 1107560: Bridget's classroom started out with a collection of only 6 books, but she plans to purchase an additional 3 books per week. Cole's library started out with 38 books, and he will purchase another 1 book per week. At what week and amount of books will the two libraries be the same? \n" ); document.write( "
Algebra.Com's Answer #843414 by ikleyn(52790)![]() ![]() You can put this solution on YOUR website! .\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solve it MENTALLY, without using equations.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( " Initial difference is 38-6 = 32 books.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " Each week the difference diminishes by 3-1 = 2 books.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " So, the difference becomes 0 (zero) in 32/2 = 16 weeks.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "At this point, the MENTAL solution is just complete.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "----------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I placed this mental solution here in order for you better understand how simple the problem is.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |