document.write( "Question 1046975: Sipho is 6 years older than Betty. In 3 years time
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document.write( "Sipho will be twice as old as Betty. How old is Sipho
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document.write( "now?
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Algebra.Com's Answer #662438 by ikleyn(52784)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Sipho is 6 years older than Betty. In 3 years time \n" ); document.write( "Sipho will be twice as old as Betty. How old is Sipho \n" ); document.write( "now? \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "S = B + 6, (1)\r\n" ); document.write( "S + 3 = 2*(B+3). (2)\r\n" ); document.write( "\r\n" ); document.write( "Substitute (1) into (2). You will get\r\n" ); document.write( "\r\n" ); document.write( "(B + 6) + 3 = 2*(B+3), or\r\n" ); document.write( "\r\n" ); document.write( "B + 9 = 2B + 6, or\r\n" ); document.write( "\r\n" ); document.write( "9-6 = 2b - b, or\r\n" ); document.write( "\r\n" ); document.write( "3 = B.\r\n" ); document.write( "\r\n" ); document.write( "Answer. Betty is 3 years old now. Sipho is 9 ears old.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "There is a bunch of lessons on age word problems \r \n" ); document.write( "\n" ); document.write( " - Age problems and their solutions\r \n" ); document.write( "\n" ); document.write( " - A fresh formulation of a traditional age problem\r \n" ); document.write( "\n" ); document.write( " - Really intricate age word problem\r \n" ); document.write( "\n" ); document.write( " - Selected age word problems from the archive\r \n" ); document.write( "\n" ); document.write( " - Age problem for the day of April, 1 \r \n" ); document.write( "\n" ); document.write( " - OVERVIEW of lessons on age problems\r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Read them and become an expert in solving age problems.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It contains a lot of other word problems and many other interesting and useful things.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |