document.write( "Question 1164985: Tad’s sister Tina asks him how old he is. Tad tells her that if she squares his age Nd subtracts 3 times his age the result is 40. How old is Tad? \n" ); document.write( "

Algebra.Com's Answer #789431 by ikleyn(52790) $\"\"$ $\"About$

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document.write( "     -  = 40\r\n" );
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document.write( "    T*(T-3) = 40\r\n" );
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document.write( "So, the number 40 is the product of two integer factors that differ by 3.\r\n" );
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document.write( "Quick guessing gives you the answer T = 8 :  Tad is 8 years old.\r\n" );
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document.write( "CHECK.  8^2 - 3*8 = 64 - 24 = 40.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "For an 8-year boy, Tad demonstrates pretty good calculation skills (!)\r
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