document.write( "Question 645458: Ria's mother age is four times of her age now. in 20 years the mother will be twice as old age of Ria. Find the present age? \n" ); document.write( "
Algebra.Com's Answer #405478 by sachi(548)\"\" \"About 
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Ria's mother age is four times of her age now
\n" ); document.write( "let ria is x & her mother is 4x
\n" ); document.write( "in 20 years the mother will be twice as old age of Ria
\n" ); document.write( "4x+20=2(x+20)=2x+40
\n" ); document.write( "or 4x-2x=40-20
\n" ); document.write( "or 2x=20
\n" ); document.write( "or x=10=ria's age
\n" ); document.write( "& her mother is 40 yrs
\n" ); document.write( "ans
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