document.write( "Question 575546: Jennifer is twice as old as Ramon. The sum of their ages 7 years ago was 13. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #369524 by Maths68(1474)\"\" \"About 
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Let
\n" ); document.write( "Present age of Jennifer = J
\n" ); document.write( "Present age of Ramon = r\r
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\n" ); document.write( "\n" ); document.write( "Jennifer is twice as old as Ramon
\n" ); document.write( "j=2r.....................(1)\r
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\n" ); document.write( "\n" ); document.write( "7 years ago
\n" ); document.write( "Jennifer was = j-7
\n" ); document.write( "Ramon was = r-7
\n" ); document.write( "Then
\n" ); document.write( "The sum of their ages was 13
\n" ); document.write( "(j-7)+(r-7)=13
\n" ); document.write( "j-7+r-7=13
\n" ); document.write( "j+r-14=13
\n" ); document.write( "j+r=13+14
\n" ); document.write( "j+r=27........................(2)
\n" ); document.write( "Put the value of j from (1) to (2)
\n" ); document.write( "2r+r=27
\n" ); document.write( "3r=27
\n" ); document.write( "3r/3=27/3
\n" ); document.write( "r=9
\n" ); document.write( "Put the value of r in (1)
\n" ); document.write( "j=2r
\n" ); document.write( "j=2(9)
\n" ); document.write( "j=18\r
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\n" ); document.write( "\n" ); document.write( "Present age of Jennifer = J = 18 years old
\n" ); document.write( "Present age of Ramon = r = 9 years old\r
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