document.write( "Question 1085968: The age of a girl in months is equal to the age of her grandmother in years. If the difference between their ages is 66 years, find their ages \n" ); document.write( "

Algebra.Com's Answer #700077 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " let age of a girl be $\"x\"$ and the age of her grandmother $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( "if the age of a girl in months is equal to the age of her grandmother in years, \r
\n" ); document.write( "\n" ); document.write( " $\"12x=y\"$ .....eq.1\r
\n" ); document.write( "\n" ); document.write( "If the difference between their ages is $\"66\"$ years,
\n" ); document.write( " $\"y-x=66\"$
\n" ); document.write( " $\"y=66%2Bx\"$ .....eq.2\r
\n" ); document.write( "\n" ); document.write( "from eq.1 and eq.2 we have
\n" ); document.write( " $\"12x=66%2Bx\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"12x-x=66\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"11x=66\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=66%2F11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=6\"$ ->The age of a girl\r
\n" ); document.write( "\n" ); document.write( " $\"y=66%2Bx\"$
\n" ); document.write( " $\"y=66%2B6\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=72\"$ ->the age of her grandmother \r
\n" ); document.write( "\n" ); document.write( " $\"12x=12%2A6=72\"$ ->The age of a girl in months which is equal to the age of her grandmother in years\r
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