document.write( "Question 41941: In three years, Chad will be three times my present age. I will then be half as old as he. How old am I?\r
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document.write( "I think it should be set up like this: 3x+3=1/2c
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document.write( "\"x\" for present age, \"c\" for chad's age
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document.write( "i know this can't be right because i can't get an answer that makes since. \n" );
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Algebra.Com's Answer #27093 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! When you do age problems, always set up the variables NOW... \n" ); document.write( "Let x be your age now and c be Chad's age now. Thus \n" ); document.write( "c + 3 = 3x and \n" ); document.write( "x + 3 = (1/2)(c + 3) \n" ); document.write( "now double the second equation and substitute and we get \n" ); document.write( "2(x + 3) = c + 3 so that \n" ); document.write( "2(x + 3) = 3x \n" ); document.write( "2x + 6 = 3x \n" ); document.write( "x = 6 \n" ); document.write( "c = 15 \n" ); document.write( " |