document.write( "Question 1148579:
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document.write( "Jack is now seven times as old as James. In 5 years, Jack will be five times as old as James. How old is James now?
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document.write( "70
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document.write( "55
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document.write( "10 \n" );
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Algebra.Com's Answer #769918 by VFBundy(438)![]() ![]() You can put this solution on YOUR website! James's age = x \n" ); document.write( "Jack's age = y \n" ); document.write( " \n" ); document.write( "y = 7x \n" ); document.write( "y + 5 = 5(x + 5) \n" ); document.write( " \n" ); document.write( "y = 7x \n" ); document.write( "y + 5 = 5x + 25 \n" ); document.write( " \n" ); document.write( "7x - y = 0 \n" ); document.write( "5x - y = -20 \n" ); document.write( " \n" ); document.write( "7x - y = 0 \n" ); document.write( "-5x + y = 20 \n" ); document.write( " \n" ); document.write( "2x = 20 \n" ); document.write( " \n" ); document.write( "x = 10 \n" ); document.write( " \n" ); document.write( "James's age = x = 10 |