document.write( "Question 620425: silvio is 10 years older than maria. The sum of their ages is equal to four times maria's age. How old are silvio and maria? Write an equation. \n" ); document.write( "
Algebra.Com's Answer #390149 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
\n" ); document.write( "silvio is 10 years older than maria's age \"highlight%28x%29\" .
\n" ); document.write( "The sum of their ages is equal to four times maria's age.
\n" ); document.write( " How old are silvio and maria? Write an equation.
\n" ); document.write( " \"highlight%28x%29\" + (\"highlight%28x%29\" + 10) = 4x
\n" ); document.write( " 10 = 2x
\n" ); document.write( " x = 5, Maria's age. Silvo is 15.
\n" ); document.write( " CHECKING our Answer***
\n" ); document.write( " 5 + 15 = 4·5 = 20 \n" ); document.write( "
\n" );