document.write( "Question 133181: I have three word problems for age and I know that they are simple but I can't seem to find the correct formula\r
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document.write( "1. If John is x years old and Julia is 4 years younger, what age does Alfred have in each case?
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document.write( "a) Alfred is 1 year older than the average age of John and Julia.\r
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document.write( "b) Alfred is 2 years younger than 5 times the difference of John's and Julias ages.\r
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document.write( "This math text is in Spanish so I translated the problems into English.\r
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document.write( "2. A father is 3 times as old as his son. In 12 years he will be double the age of his son. What are the father and son's ages now? \n" );
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Algebra.Com's Answer #97407 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 1. If John is x years old and Julia is 4 years younger, what age does Alfred have in each case? \n" ); document.write( "John is x \n" ); document.write( "Julia is x-4 \n" ); document.write( "-------------------------- \n" ); document.write( "a) Alfred is 1 year older than the average age of John and Julia. \n" ); document.write( "Alfred = [(x + x-4)/2] + 1 = [(2x-4)/2] + 1 = x-2 + 1 = x-1 \n" ); document.write( "-------------------------------------- \n" ); document.write( "b) Alfred is 2 years younger than 5 times the difference of John's and Julias ages. \n" ); document.write( "EQUATION: \n" ); document.write( "x-1 =5(x-(x-4)) -2 = 20-2 = 18 \n" ); document.write( "---------------------------------- \n" ); document.write( " \n" ); document.write( "This math text is in Spanish so I translated the problems into English. \n" ); document.write( "2. A father is 3 times as old as his son. In 12 years he will be double the age of his son. What are the father and son's ages now? \n" ); document.write( "Let son's age be \"x\"; Father's age is \"3x\". \n" ); document.write( "In 12 yrs, son will ber x+12; father will be \"3x+12\" \n" ); document.write( "EQUATION: \n" ); document.write( "3x+12 = 2(x+12) \n" ); document.write( "x = 12 (son's age) \n" ); document.write( "3x= 36 (father's age) \n" ); document.write( "---------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |