document.write( "Question 59721This question is from textbook
\n" ); document.write( ": Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo? \n" ); document.write( "
Algebra.Com's Answer #40982 by stanbon(75887)\"\" \"About 
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Ricardo is 4 years than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?
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\n" ); document.write( "Let his sister's age be \"x\".
\n" ); document.write( "Ricardo's age is\"2x-4\"
\n" ); document.write( "EQUATION:
\n" ); document.write( "x+2x-4=20
\n" ); document.write( "3x=24
\n" ); document.write( "x=8 (sister's age)
\n" ); document.write( "2x-4=12 (Ricardo's age)
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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