document.write( "Question 1146315: The sum of the ages of Kevin and Rebecca is 54 years. 6 years ago, Kevin's age was 2 times Rebecca's age. How old is Kevin now? \n" ); document.write( "
Algebra.Com's Answer #767600 by ankor@dixie-net.com(22740)\"\" \"About 
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let k + K's present age
\n" ); document.write( "let r + R's age
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\n" ); document.write( "write an equation for each statement
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\n" ); document.write( " The sum of the ages of Kevin and Rebecca is 54 years.
\n" ); document.write( "k + r = 54
\n" ); document.write( " 6 years ago, Kevin's age was 2 times Rebecca's age.
\n" ); document.write( "k - 6 = 2(r - 6)
\n" ); document.write( "k - 6 = 2r - 12
\n" ); document.write( "k = 2r - 12 + 6
\n" ); document.write( "k = 2r - 6
\n" ); document.write( "Rearrange and subtract from the 1st equation
\n" ); document.write( "k - 2r = -6
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\n" ); document.write( "k + r = 54
\n" ); document.write( "k -2r = -6
\n" ); document.write( "---------------Subtraction eliminates k, find r
\n" ); document.write( "0 + 3r = 60
\n" ); document.write( "r = 60/3
\n" ); document.write( "r = 20 yr is Rebeccas'age
\n" ); document.write( "and
\n" ); document.write( "54 - 20 = 34 yrs is Kevin's age
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\n" ); document.write( "Check this in the statement
\n" ); document.write( "\"6 years ago, Kevin's age was 2 times Rebecca's age.\"
\n" ); document.write( "34 - 6 = 2(20-6)
\n" ); document.write( "28 = 2(14)\r
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