document.write( "Question 224875: Kimberly is twice as old as Ryan. In 4 years, she will be 7 years older than Ryan. How old is Kimberly now? \n" ); document.write( "
Algebra.Com's Answer #167984 by ankor@dixie-net.com(22740)\"\" \"About 
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Let k = Kimberly's present age
\n" ); document.write( "Let r = Ryan's present age
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement:
\n" ); document.write( ":
\n" ); document.write( "\"Kimberly is twice as old as Ryan.\"
\n" ); document.write( "k = 2r
\n" ); document.write( ":
\n" ); document.write( "\" In 4 years, she will be 7 years older than Ryan.\"
\n" ); document.write( "k + 4 = (r + 4) + 7
\n" ); document.write( "k + 4 = r + 11
\n" ); document.write( "k = r + 11 - 4
\n" ); document.write( "k = r + 7
\n" ); document.write( ":
\n" ); document.write( "How old is Kimberly now?
\n" ); document.write( ":
\n" ); document.write( "Replace k with 2r in the above equation
\n" ); document.write( "2r = r + 7
\n" ); document.write( "2r - r = 7
\n" ); document.write( "r = 7 is Ryan's present age
\n" ); document.write( "then
\n" ); document.write( "2(7) = 14 is K's present age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solution in the statement:
\n" ); document.write( "\"In 4 years, she will be 7 years older than Ryan.\"
\n" ); document.write( "14 + 4 = (7 + 4) + 7 \n" ); document.write( "
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