document.write( "Question 1134455: Leo is 5 years older than Pat. In 10 years, Leo will be twice Pat's present age. How old is leo now? \n" ); document.write( "

Algebra.Com's Answer #751849 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Using obvious notations, we have these two equations\r\n" );
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document.write( "L = P + 5      (1)    (\"Leo is 5 years older than Pat.\")\r\n" );
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document.write( "L + 10 = 2P    (2)    (\"In 10 years, Leo will be twice Pat's present age.\")\r\n" );
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document.write( "From equation (1), express  P = L - 5.  In equation (2),  replace P  by  L-5,  based on it.  You will get\r\n" );
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document.write( "L + 10 = 2*(L-5).\r\n" );
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document.write( "Solve for L :\r\n" );
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document.write( "L + 10 = 2L - 10\r\n" );
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document.write( "10 + 10 = 2L - L\r\n" );
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document.write( "====================>  20 = L.\r\n" );
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document.write( "ANSWER.  Leo is 20 years old now.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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