document.write( "Question 1146772: please help me solve this:
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document.write( "3yrs ago ade was 5yrs his mother's age was 5times his age. what will his age in 4yrs? \n" );
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Algebra.Com's Answer #768065 by Theo(13342)![]() ![]() You can put this solution on YOUR website! let x = the ace of ade today. \n" ); document.write( "let y = the age of the mother of ade today.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 years ago, ade was 5. \n" ); document.write( "formula for that is x - 3 = 5 \n" ); document.write( "solve for x to get x = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 years ago, the age of ade's mother was 5 times the age of ade. \n" ); document.write( "formula for that is y - 3 = 5 * 5 = 25 \n" ); document.write( "solve for y to get y = 28\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 years ago, ade was 5. \n" ); document.write( "today, ade is 8. \n" ); document.write( "4 years from now, ade will be 12.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that should answer the question.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "going a litle further, ....\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 years ago, ade's mother was 25. \n" ); document.write( "today, ade's mother is 28 \n" ); document.write( "4 years from now, ade's mother will be 32.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the problem statement was: \n" ); document.write( "3 yrs ago, ade was 5 yrs. \n" ); document.write( "his mother's age was 5 times his age. \n" ); document.write( "what will his age in 4 yrs? \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i took this to mean: \n" ); document.write( "ade was 5 years old 3 years ago. \n" ); document.write( "his mother was 5 times his age 3 years ago. \n" ); document.write( "that means his mother had to be 25 three years ago. \n" ); document.write( "add 3 to both their ages and you get their ages today. \n" ); document.write( "that would be 8 for ade and 28 for his mother. \n" ); document.write( "4 years from now, ade would be 12 and his mother would be 32.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "apparently, you didn't need to know how old his mother was to solve this problem because you only needed to find out how old ade was 4 years from now.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "he was 5 three years ago. \n" ); document.write( "he's 8 today (5 + 3 = 8). \n" ); document.write( "4 years from now, he will be 12 (8 + 4 = 12).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the information about his mother's age was not necessary to solve the problem. \n" ); document.write( "that makes the information supplied about his mother's age extraneous information, meaning it wasn't necessary in order for the problem to be solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |